MALICIOUS — 457f722647635ef1077bc264427e446b50f5c9752f7179ca63b7e3123d7afc7e

MALICIOUS — 457f722647635ef1077bc264427e446b50f5c9752f7179ca63b7e3123d7afc7e is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (100/100), attributed to the Prepender family. 7 of 56 detection engines flagged it, exhibiting 6 ATT&CK techniques.

Identification

SHA-256: 457f722647635ef1077bc264427e446b50f5c9752f7179ca63b7e3123d7afc7e
SHA-1: 6fff4a8208946a065aa6155c5af583bb2b117969
MD5: 6bb7936a0bd5fcc26c11d5db93351c19
imphash: 5144a995e58e9a1dec8b8e0e5ed55aec
ssdeep: 49152:yUFxoiHnCkJsDB8UFxoiHnCkJsDB8UFxoiHnCkJsDB:ZK5K5K
TLSH: T1995C9E5DEF9B522CF4EE2B356C07289C5150B21600EAB1C7D683D97F4A93223B1631A7
Submitted as: 457f722647635ef1077bc264427e446b50f5c9752f7179ca63b7e3123d7afc7e
File type: pe · Size: 2469888 bytes
Verdict: malicious (100/100) · Family: Prepender

Detections (7 of 56 engines)

capa (capabilities): capability:collection/keylog
ClamAV (daily): Win.Trojan.Generic-9907165-0
YARA: JPCERT/CC: JPCERT_HUILoader_PlugX_SideLoad
Microsoft Defender: Virus:Win32/Pidgeon.A
Emsisoft (Emergency Kit): Win32.Prepender.Gen.1
Trellix Stinger (McAfee): Flyagent.d
Kaspersky (KVRT): Virus.Win32.Agent.ev

MITRE ATT&CK

Why this verdict

The malicious score of 100/100 is the fusion of 17 weighted signals:

ClamAV (daily) flagged Win.Trojan.Generic-9907165-0 (rule Win.Trojan.Generic-9907165-0) - engine signal, weight 0.90, confidence 0.95
Microsoft Defender flagged Virus:Win32/Pidgeon.A (rule Virus:Win32/Pidgeon.A) - engine signal, weight 0.55, confidence 0.85
Emsisoft (Emergency Kit) flagged Win32.Prepender.Gen.1 (rule Win32.Prepender.Gen.1) - engine signal, weight 0.55, confidence 0.85
Trellix Stinger (McAfee) flagged Flyagent.d (rule Flyagent.d) - engine signal, weight 0.55, confidence 0.85
Kaspersky (KVRT) flagged Virus.Win32.Agent.ev (rule Virus.Win32.Agent.ev) - 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
capture keystrokes (rule capture keystrokes) - capa signal, weight 0.40, confidence 0.80
Contacted 2 external host(s) and 6 HTTP request(s) at runtime - network signal, weight 0.40, confidence 0.80
Anti-analysis: T1497.001 - dynamic signal, weight 0.40, confidence 0.75
capa (capabilities) flagged capability:collection/keylog (rule capability:collection/keylog) - engine signal, weight 0.35, confidence 0.70
Embedded network infrastructure: http://www.eyuyan.com - static signal, weight 0.35, confidence 0.60
communicate over HTTP (rule communicate over HTTP) - capa signal, weight 0.30, confidence 0.60
Dropped 20 executable file(s) at runtime - dynamic signal, weight 0.20, confidence 0.60
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)

70425 behavior events · 2 ATT&CK techniques · 27 dropped files.

Dropped files

C:\Program Files\7-Zip\7zG.exe.ico - 8cad493433ec34a34ca6f4fd49655aaf7cbb4337752743804db83ea6c050d1fe
C:\Program Files\Adobe\Acrobat DC\Acrobat\AcroTextExtractor.exe - 1fa5bf4a22b907fe8ef4e0dfc2793ab2c346fd49d23ec173584fbeb36a8d8793
C:\Users\analyst\AppData\Local\Temp\tsk_5d03ac34047c42a8.exe.exe - 84971441c18846ad39ed220cd0d3d6481e2297fec3496e0372036b1823293ea7
C:\Program Files\Adobe\Acrobat DC\Acrobat\Acrobat.exe - 18722d8e310d45537801cd934cfd850896bd92adaae6dc09a64255c6d2e780e4
C:\Program Files\7-Zip\Uninstall.exe.ico - ea0420b60b078a22fdcfd40d86d589793baa2e0327b37dcdcc5399aac4037d4e
C:\Sysmon64.exe - ec02041192a9e9944ed5ad645cf5717b635c7ba37a7a2cf71b75b34850f50a9f
C:\Program Files\Adobe\Acrobat DC\Acrobat\ADNotificationManager.exe.exe - 6c2a730e10b2affc4d0ac5e259db3e53c46eeed054cd7dbc55b59b428618ed14
19ae4dc6481f738d164b59daa58659ddc4419911089464415840e7ab31e4bf4b - 19ae4dc6481f738d164b59daa58659ddc4419911089464415840e7ab31e4bf4b
C:\Program Files\Adobe\Acrobat DC\Acrobat\ADelRCP.exe.exe - e607f84f465b566c16ae96a330fbed879519b606f12fe5e8dbcca91dc8983461
C:\Program Files\Adobe\Acrobat DC\Acrobat\ADNotificationManager.exe.ico - 14b347748c4d208fa5294f7bdd53ae4147d40e27cf810dd60423af0d8b0c989c
C:\Program Files\7-Zip\7zG.exe.exe - ffb48528e766ea5e3baee7725c4961a65bee29b553eba3814c7c93d1529d8936
C:\Program Files\Adobe\Acrobat DC\Acrobat\Adobe Crash Processor.exe - a1c6406d2b01e2cb4ab9c0d6bff28d87173d8e7e3a327b38fe970c1cb17d6f7b
C:\Program Files\Adobe\Acrobat DC\Acrobat\ADNotificationManager.exe - 0fb75b79f5089c0c8dae9c966d4aed7e73a3f23911c39d90174f71db156017cc
C:\Program Files\7-Zip\Uninstall.exe.exe - 40f5de108e5b2afb8f4d031354faa7acf288d0be9c369015fb64d72faade9795
C:\Program Files\Adobe\Acrobat DC\Acrobat\Adobe Crash Processor.exe.ico - 463b6e99198762de39ea3c9156504527673355f452c17063d0fcc34caa3cfded

Embedded URLs

http://www.eyuyan.com
http://www.msftconnecttest.com/connecttest.txt
http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D
http://rb.symcb.com/rb.crl

Embedded domains

www.eyuyan.com
wtqq.net

Embedded IP addresses

4.150.223.98
52.123.252.242
4.230.171.124
48.211.4.16
20.165.94.54
74.178.76.128
20.50.201.205
20.247.184.197
52.110.12.56
52.110.12.44
4.150.223.109
4.207.44.68
135.233.45.223
52.148.114.188
72.145.35.96
52.110.12.22
52.110.12.30

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report