MALICIOUS — 2964954d9c0787f8a717b550366eab002e7e2661c38c6d08917f9d012baf0643

MALICIOUS — 2964954d9c0787f8a717b550366eab002e7e2661c38c6d08917f9d012baf0643 is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (100/100), attributed to the Vtflooder family. 9 of 56 detection engines flagged it, exhibiting 5 ATT&CK techniques.

Identification

SHA-256: 2964954d9c0787f8a717b550366eab002e7e2661c38c6d08917f9d012baf0643
SHA-1: 9ec57c4acb68158b327ae06216c431b4198d30b7
MD5: 71034fef2882b9285db1aff4db4e319e
imphash: 87bed5a7cba00c7e1f4015f1bdae2183
ssdeep: 768:cd5u7mNGtyVf7AsQGPL4vzZq2o9W7GsxBbPr:cd5z/fcvGCq2iW7z
TLSH: T1152DD083060C7B90E1C7D534E088AD6C834BF2AC95746E8C2483F5566B9829FA594D9E
Submitted as: 2964954d9c0787f8a717b550366eab002e7e2661c38c6d08917f9d012baf0643
File type: pe · Size: 27136 bytes
Verdict: malicious (100/100) · Family: Vtflooder

Detections (9 of 56 engines)

MalwareAnalyser heuristics (entropy/packer): DxPack
ClamAV (daily): Win.Malware.Vtflooder-6260355-1
YARA: JPCERT/CC: JPCERT_HUILoader_PlugX_SideLoad
YARA: Yara-Rules community: YR_Packer_ASPack_MPRESS
Detect It Easy (packer/type): DIE:DxPack
Microsoft Defender: Virus:Win32/Mikcer.B
Emsisoft (Emergency Kit): Trojan.Agent.FFVD
Trellix Stinger (McAfee): Trojan-FVWC!71034FEF2882
Kaspersky (KVRT): Virus.Win32.Nimnul.f

MITRE ATT&CK

Why this verdict

The malicious score of 100/100 is the fusion of 19 weighted signals:

ClamAV (daily) flagged Win.Malware.Vtflooder-6260355-1 (rule Win.Malware.Vtflooder-6260355-1) - engine signal, weight 0.90, confidence 0.95
Dropped a malicious payload (Madeba): JNEwqQ.exe - dynamic signal, weight 0.62, confidence 0.90
Memory forensics: 1 finding(s) attributed to the sample across 1 technique(s), e.g. RWX/private injected region in tsk_6aecb8dad1 (pid 8816) (rule windows.malfind.Malfind) - memory signal, weight 0.60, confidence 0.85
Microsoft Defender flagged Virus:Win32/Mikcer.B (rule Virus:Win32/Mikcer.B) - engine signal, weight 0.55, confidence 0.85
Emsisoft (Emergency Kit) flagged Trojan.Agent.FFVD (rule Trojan.Agent.FFVD) - engine signal, weight 0.55, confidence 0.85
Trellix Stinger (McAfee) flagged Trojan-FVWC!71034FEF2882 (rule Trojan-FVWC!71034FEF2882) - engine signal, weight 0.55, confidence 0.85
Kaspersky (KVRT) flagged Virus.Win32.Nimnul.f (rule Virus.Win32.Nimnul.f) - engine signal, weight 0.55, confidence 0.85
YARA: JPCERT/CC flagged JPCERT_HUILoader_PlugX_SideLoad (rule JPCERT_HUILoader_PlugX_SideLoad) - engine signal, weight 0.60, confidence 0.70
2 behavioral detection(s) across 2 rule(s): Windows Service Installation [medium] (rule tl-service-install) - dynamic signal, weight 0.43, confidence 0.90
Observed at runtime: Windows Service (T1543.003) (rule Windows Service) - dynamic signal, weight 0.40, confidence 0.90
Contacted 2 external host(s) and 29 HTTP request(s) at runtime - network signal, weight 0.40, confidence 0.80
Anti-analysis: T1082 - dynamic signal, weight 0.40, confidence 0.75
Detect It Easy (packer/type) flagged DIE:DxPack (rule DIE:DxPack) - engine signal, weight 0.35, confidence 0.70
MalwareAnalyser heuristics (entropy/packer) flagged DxPack (rule DxPack) - engine signal, weight 0.35, confidence 0.70
YARA: Yara-Rules community flagged YR_Packer_ASPack_MPRESS (rule YR_Packer_ASPack_MPRESS) - engine signal, weight 0.30, confidence 0.70
communicate over HTTP (rule communicate over HTTP) - capa signal, weight 0.30, confidence 0.60
Packing/obfuscation: DxPack - static signal, weight 0.25, confidence 0.55
Observed at runtime: Modify Registry (T1112) (rule Modify Registry) - dynamic signal, weight 0.12, confidence 0.90
Memory forensics: 2 finding(s) elsewhere in the guest, not attributed to this sample, e.g. SSDT hook (rule windows.ssdt.SSDT) - memory signal, weight 0.05, confidence 0.30

Dynamic analysis (windows)

27282 behavior events · 2 ATT&CK techniques · 49 dropped files.

Dropped files

C:\Program Files\Eclipse Adoptium\jdk-21.0.5+11-jre\bin\jfr.exe - 3e27cc6407fc7d7b6e26495c6ff849c23cf3b6e9c8a885ea742ad7b3109af536
C:\Program Files\Adobe\Acrobat DC\Acrobat\NGL\cefWorkflow\adobe_licensing_wf_acro.exe - b8a9d5807917687ab25ef2c5759f7f1520fda63f734924b93c86e5524d0e7f68
C:\Program Files\Eclipse Adoptium\jdk-21.0.5+11-jre\bin\ktab.exe - 51e57fdf672acec905dc11fb467293a6c1251683cb92e769d451e46b9e0e92d6
C:\Users\analyst\AppData\Local\Temp\JNEwqQ.exe - 4354970ccc7cd6bb16318f132c34f6a1b3d5c2ea7ff53e1c9271905527f2db07
C:\Program Files\Adobe\Acrobat DC\Acrobat\NGL\cefWorkflow\adobe_licensing_wf_helper_acro.exe - 377693e2ca6eefba36f61373194f572541a409cb10808b8c71d52897a6df3e8f
bd115a575e86e61cea9136c5a2c47e090ba484dc2dee8b51a34111bb094266d5 - bd115a575e86e61cea9136c5a2c47e090ba484dc2dee8b51a34111bb094266d5
C:\Program Files\7-Zip\Uninstall.exe - c92e0c00787b4edca8cffd4e4b2a01f743dcb288b184a9363d630f6a08ca0615
C:\Program Files\Eclipse Adoptium\jdk-21.0.5+11-jre\bin\jrunscript.exe - 3c6d62569a6dbad19d57ab33039ea0626a3eaf4386fa8b207c136957b26005ab
C:\Program Files\Adobe\Acrobat DC\Acrobat\RDCNotificationClient\FullTrustNotifier.exe - f72ae9e2704e97d9c31b3128003296ae46b20acdda49bf2e85d5b6799085bb4f
C:\Program Files\Eclipse Adoptium\jdk-21.0.5+11-jre\bin\jabswitch.exe - c4c65264e0d3b9b31c5262259ec4b8af6ec62a1fff918a98910aabf17f015959
C:\Program Files\Adobe\Acrobat DC\Acrobat\x86\Acrobat\Acrobat.exe - 698f79937dc7b693633e00453acea137673a666e8b98c796d14fb8a41df1fdac
C:\Users\analyst\AppData\Local\Microsoft\Windows\INetCache\IE\XRUA1FHR\k4[1].rar - 01ba4719c80b6fe911b091a7c05124b64eeece964e09c058ef8f9805daca546b
C:\Program Files\Adobe\Acrobat DC\Acrobat\ADNotificationManager.exe - 79671bf6759f645dfeb021e3fcece87abe20b7c6be7ee7bf9c362603056a23ee
C:\Program Files\Eclipse Adoptium\jdk-21.0.5+11-jre\bin\java.exe - 8c435a45123e88410f42259fcb3b303b5f60ce00e01d8d4a9c5bd342bf51e184
C:\Program Files\Eclipse Adoptium\jdk-21.0.5+11-jre\bin\keytool.exe - 599e533da3261e2fc678ccc3393bb90cafa7ce620196168b9c5cb41a4e48099b

Embedded URLs

http://www.msftconnecttest.com/connecttest.txt
http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D
http://rb.symcb.com/rb.crl
http://ddos.dnsnb8.net:799/cj//k1.rar
http://www.virustotal.com/vtapi/v2/file/scan
http://ddos.dnsnb8.net:799/cj//k2.rar
http://ddos.dnsnb8.net:799/cj//k3.rar
http://ddos.dnsnb8.net:799/cj//k4.rar
http://ddos.dnsnb8.net:799/cj//k5.rar
http://c.pki.goog/r/r1.crl
http://x2.c.lencr.org/
http://ye.c.lencr.org/
http://c.pki.goog/wr2/9UVbN0w5E6Y.crl
http://yr.c.lencr.org/

Embedded domains

ddos.dnsnb8.net
vtboss.yolox.net
www.virustotal.com
x1.c.lencr.org
x2.c.lencr.org
ye.c.lencr.org
yr.c.lencr.org

Embedded IP addresses

20.184.175.16
52.123.252.212
4.230.171.124
172.215.188.232
4.144.132.223
172.64.154.167
135.232.92.97
74.178.240.61
4.207.44.71
34.54.88.138
3.229.117.57
52.110.12.18
52.110.12.44
72.145.35.104
52.148.114.188

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report