MALICIOUS — 648088f5c7c37bb7b7cf47318bcf5e91899d233b03ab5b8c718e0418a39dc3cc

MALICIOUS — 648088f5c7c37bb7b7cf47318bcf5e91899d233b03ab5b8c718e0418a39dc3cc 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: 648088f5c7c37bb7b7cf47318bcf5e91899d233b03ab5b8c718e0418a39dc3cc
SHA-1: ec5ac71e59711ddb8a1c628fbcafb1bd1edb7ada
MD5: 733f3f0fc15704fbac0d7ac6229a9b11
imphash: 5144a995e58e9a1dec8b8e0e5ed55aec
ssdeep: 49152:kCGLGvyM1CGLGvyM1CGLGvyM1CGLGvyM1CGLGvyM:kCGqvy8CGqvy8CGqvy8CGqvy8CGqvy
TLSH: T12561AD647801702CC1AD1F1108168B9C7C3A6E59E47F213B12EFAAB994B38671F761DE
Submitted as: 648088f5c7c37bb7b7cf47318bcf5e91899d233b03ab5b8c718e0418a39dc3cc
File type: pe · Size: 3842048 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 3 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 22 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)

71794 behavior events · 2 ATT&CK techniques · 29 dropped files.

Dropped files

C:\Program Files\7-Zip\7z.exe - 61c1cf26f6f5b2a1fdb9953d4767fb03a6f260e5835ea7600a14c4ee48f34c0d
C:\Program Files\Adobe\Acrobat DC\Acrobat\Adobe Crash Processor.exe - 75d80f048242ee78f82a73a1b940bcfd9bb8dc238bd7757fe9dc2a61dbfccdf8
C:\Program Files\Adobe\Acrobat DC\Acrobat\AcroBroker.exe - 89f972fcce66d0cb1826e7500403b67da83f0b848e7ed7dffd4e93ebb6af4dc5
C:\Program Files\Adobe\Acrobat DC\Acrobat\ADNotificationManager.exe - c72706cf8eb197d02bc826af3a295b029e72f218613cb8691beb4a0c6aa37946
C:\Program Files\7-Zip\7zG.exe.ico - 8cad493433ec34a34ca6f4fd49655aaf7cbb4337752743804db83ea6c050d1fe
C:\Program Files\7-Zip\Uninstall.exe.ico - ea0420b60b078a22fdcfd40d86d589793baa2e0327b37dcdcc5399aac4037d4e
C:\Program Files\Adobe\Acrobat DC\Acrobat\AcroTextExtractor.exe - 390ecc605b312063d3b8dd671b184ce9184598a163bf34b8a98744e68ef4f6d5
C:\Program Files\7-Zip\Uninstall.exe.exe - b7707b57cb69c2326baba88ad65d2a4a2736c6d0ff0b2d3694b88580c18ac7ce
19ae4dc6481f738d164b59daa58659ddc4419911089464415840e7ab31e4bf4b - 19ae4dc6481f738d164b59daa58659ddc4419911089464415840e7ab31e4bf4b
C:\Program Files\Adobe\Acrobat DC\Acrobat\Adobe Crash Processor.exe.exe - 588ae82407c56583c524bbaba14c628326c175ce6a79caf77dbdea7e80fae62b
C:\Program Files\Adobe\Acrobat DC\Acrobat\acrobat_sl.exe - d9f483319eb75a7bb56816d79a05c6d32aaf4ad8bd04df47994bbec457a29588
C:\Users\analyst\AppData\Local\Temp\tsk_609eb49290a84f99.exe.exe.exe.exe - 4998220be4e8b0c382508affcb3d35f0616a51fdd5702b3052b69ff1784c54da
C:\Program Files\Adobe\Acrobat DC\Acrobat\Acrobat.exe - 9fd2603a21295603fb0ae8a05628dea53324460180c603986aa6381388d44242
45f2af0e209f76bf10838118791e0c37f9b8dce2726f63cb8c3dfe663faca206 - 45f2af0e209f76bf10838118791e0c37f9b8dce2726f63cb8c3dfe663faca206
C:\Program Files\Adobe\Acrobat DC\Acrobat\ADelRCP.exe - f6a79d77c7ac3042743b0c2dd1914bf885e9dfd6edf794327715856594252d11

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

20.50.201.205
4.144.132.223
52.123.252.216
4.230.171.124
162.159.142.9
135.233.45.222
57.154.63.210
52.148.114.188
72.145.35.96
52.110.12.37
52.110.12.40

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report