MALICIOUS — 54bd38181b6cdf12a19a9b5af6253ec3afadd7b19c2160b391c98bdaea055be2

MALICIOUS — 54bd38181b6cdf12a19a9b5af6253ec3afadd7b19c2160b391c98bdaea055be2 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: 54bd38181b6cdf12a19a9b5af6253ec3afadd7b19c2160b391c98bdaea055be2
SHA-1: c798d1181fee6e6d80cf2f7bc7543728b8547ed5
MD5: 10e133bf387119e6c8131cf8aa035add
imphash: 5144a995e58e9a1dec8b8e0e5ed55aec
ssdeep: 24576:sw5YBaK9sRdC2l6tk7WxMK4qEsKoQE49:iBaK9sRM2lItaK4+R4
TLSH: T191519E47DFE26965FBAF7B21CC45C8CC90592BBC80D902678386D76050A673BA92407F
Submitted as: 54bd38181b6cdf12a19a9b5af6253ec3afadd7b19c2160b391c98bdaea055be2
File type: pe · Size: 909312 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 4 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 18 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)

68860 behavior events · 2 ATT&CK techniques · 25 dropped files.

Dropped files

C:\Program Files\7-Zip\7zG.exe.exe - 0de9738462f6f8af556d41f19c066e0ea7558507aaf1e1014931f9e4ea1b4c94
C:\Program Files\Adobe\Acrobat DC\Acrobat\AcroBroker.exe - b859f133a702b37c866b77af29bde81f2b5962df38f5ceb04b2fc5fda1cdea00
C:\Program Files\7-Zip\7zG.exe.ico - 8cad493433ec34a34ca6f4fd49655aaf7cbb4337752743804db83ea6c050d1fe
C:\Program Files\7-Zip\7zFM.exe - 60525946f1ce16627a4dc0f73478f693976d58f5e46d0c400c4d8e0c36f642c5
C:\Program Files\7-Zip\7z.exe - 6fa0005855445b70069a06fd7a5a1dcf1e9694fada1fa026198073efe77eb460
C:\Program Files\7-Zip\Uninstall.exe.ico - ea0420b60b078a22fdcfd40d86d589793baa2e0327b37dcdcc5399aac4037d4e
C:\Program Files\Adobe\Acrobat DC\Acrobat\Adobe Crash Processor.exe - eb3b5454c3f01bc65c78803ad0fa645ce32ab5e9c9b86cbe9f36a19a9569f5f0
C:\Users\analyst\AppData\Local\Temp\tsk_a5ea8fbfcabf4987.exe.exe - abbd166c1a399f3ceccb0755ae397b3d4080e403d3a52a1e983d7e021340e1e9
C:\Program Files\Adobe\Acrobat DC\Acrobat\acrobat_sl.exe - fe5b753dd06618a133f9971f0e0686d8dd223c771ba6105b75cab4e2da9dcba7
19ae4dc6481f738d164b59daa58659ddc4419911089464415840e7ab31e4bf4b - 19ae4dc6481f738d164b59daa58659ddc4419911089464415840e7ab31e4bf4b
C:\Program Files\Adobe\Acrobat DC\Acrobat\AcroTextExtractor.exe - 3e691a2e3c458bde51eaba82a6915dc56bf6cc98094600bd22fcf17d474215d1
C:\Program Files\Adobe\Acrobat DC\Acrobat\ADNotificationManager.exe.exe - 2a2bd9e62c1141eaf201fc01e3b5c061b977deec69f4a913eb7c28803e13bcbd
C:\Program Files\Adobe\Acrobat DC\Acrobat\ADNotificationManager.exe.ico - 14b347748c4d208fa5294f7bdd53ae4147d40e27cf810dd60423af0d8b0c989c
C:\Program Files\Adobe\Acrobat DC\Acrobat\AcrobatInfo.exe - d2f00505f68ca2d8d3c3982e3cabfd5e788d72622e9926f713a0d444cbb89f3c
C:\Program Files\7-Zip\Uninstall.exe.exe - 27a318ebbd1168535ed51f4cd6fd9de558c0884ba758facd784609c1c86bcfd3

Embedded URLs

http://www.microsoft.com/pki/certs/MicrosoftTimeStampPCA.crt0
http://crl.microsoft.com/pki/crl/products/microsoftrootcert.crl0T
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

crl.microsoft.com
www.microsoft.com
www.eyuyan.com
wtqq.net

Embedded IP addresses

20.42.73.28
4.230.171.124
20.247.184.142
135.233.95.135
74.179.77.204
20.184.175.18
85.210.196.11
135.233.45.221
52.148.114.188
72.153.5.138
52.110.12.11
52.110.12.18

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report