MALICIOUS — agenttesla-memtest.exe

MALICIOUS — agenttesla-memtest.exe is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (98/100), attributed to the Shufab family. 4 of 53 detection engines flagged it, exhibiting 2 ATT&CK techniques.

Identification

SHA-256: ffaa60eca6690e2e3c34ca355e2670783fc05593f46f3f3f10f0f23471c9c74d
SHA-1: ebca9461a12165683e80aa64712b9669efc331bd
MD5: a6c861dfadfbb1651f9c70160b63cbcf
imphash: f34d5f2d4577ed6d9ceec516c1f5a744
ssdeep: 12288:5qIrEFD09leQEA49darfr3/2AbitnVYE96ltRE:5AFD1A498H2Dv
TLSH: T1884AD589352C0B73C36259E60574D28B8DE360A33FED262049437D76D712EDB58A2B36
Submitted as: agenttesla-memtest.exe
File type: pe · Size: 460807 bytes
Verdict: malicious (98/100) · Family: Shufab

Detections (4 of 53 engines)

Microsoft Defender: Trojan:MSIL/Shufab.A!bit
Emsisoft (Emergency Kit): Gen:Variant.msilheracles.128405
Kaspersky (KVRT): HEUR:Trojan.Win32.Generic
Trellix Stinger (McAfee): Packed-VL!A6C861DFADFB

MITRE ATT&CK

Why this verdict

The malicious score of 98/100 is the fusion of 11 weighted signals:

Microsoft Defender flagged Trojan:MSIL/Shufab.A!bit (rule Trojan:MSIL/Shufab.A!bit) - engine signal, weight 0.55, confidence 0.85
Emsisoft (Emergency Kit) flagged Gen:Variant.msilheracles.128405 (rule Gen:Variant.msilheracles.128405) - engine signal, weight 0.55, confidence 0.85
Observed at runtime: Windows Service (T1543.003) (rule Windows Service) - dynamic signal, weight 0.40, confidence 0.90
1 behavioral detection(s): Windows Service Installation [medium] (rule tl-service-install) - dynamic signal, weight 0.40, confidence 0.90
Observed at runtime: Windows Service (T1543.003) (rule Windows Service) - dynamic signal, weight 0.40, confidence 0.90
1 behavioral detection(s): Windows Service Installation [medium] (rule tl-service-install) - dynamic signal, weight 0.40, confidence 0.90
Extracted AgentTesla config (0 C2) - engine signal, weight 0.45, confidence 0.60
Extracted AgentTesla config (0 C2) - engine signal, weight 0.45, confidence 0.60
Embedded network infrastructure: 6.9.1.5, 17.18.7.0 - static signal, weight 0.35, confidence 0.60
Observed at runtime: Modify Registry (T1112) (rule Modify Registry) - dynamic signal, weight 0.12, confidence 0.90
Observed at runtime: Modify Registry (T1112) (rule Modify Registry) - dynamic signal, weight 0.12, confidence 0.90

Dynamic analysis (windows)

7226 behavior events · 2 ATT&CK techniques · 8 dropped files.

Dropped files

3daa93b22601ecf778176338b1b5d845584cb99a8d67b2d0d224a64eeaad30b6 - 3daa93b22601ecf778176338b1b5d845584cb99a8d67b2d0d224a64eeaad30b6
3ee8acf49be6d718f214e22396cca984b869e64fa82980246cadcbb7e2c79556 - 3ee8acf49be6d718f214e22396cca984b869e64fa82980246cadcbb7e2c79556
e5cc8949db43c289438c9e67ec80a99fabdb008eecd954843d41f58c076a6167 - e5cc8949db43c289438c9e67ec80a99fabdb008eecd954843d41f58c076a6167
de2a0403854c6bc7b7216269fc08ec7dd56548d01961982d9d6318ee7d9d138c - de2a0403854c6bc7b7216269fc08ec7dd56548d01961982d9d6318ee7d9d138c
8d0207c4e796a26d6c4b2ae4b77f4489b2093a9bd1c0bbda71e482fd2f437b3b - 8d0207c4e796a26d6c4b2ae4b77f4489b2093a9bd1c0bbda71e482fd2f437b3b
14bdcb3dfae1adf59138170b6eed571c837256a7dcc39e0e97ac53449909fe98 - 14bdcb3dfae1adf59138170b6eed571c837256a7dcc39e0e97ac53449909fe98
66c2140c4b68c5fa2a885d51562e6a8d235f59ccd21d7eac9661972daf6ebd4e - 66c2140c4b68c5fa2a885d51562e6a8d235f59ccd21d7eac9661972daf6ebd4e
49e6bab450360a5fadc4aa891157ffe7f7e9c93a8b5a95e372245e08e85fc2c1 - 49e6bab450360a5fadc4aa891157ffe7f7e9c93a8b5a95e372245e08e85fc2c1

Embedded domains

searchapp.bundleassets.example
www.msftconnecttest.com
www.bing.com
config.edge.skype.com
aps.prod.windows.com
tas02.sls.update.microsoft.com
to-do.microsoft.com
dns.msftncsi.com
settings-win.data.microsoft.com
ctldl.windowsupdate.com
edge.microsoft.com
watson.events.data.microsoft.com
fs.microsoft.com

Embedded IP addresses

6.9.1.5
17.18.7.0

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report