Analysis
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max time kernel
143s -
max time network
154s -
platform
windows10-2004_x64 -
resource
win10v2004-20230703-en -
resource tags
arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system -
submitted
03/08/2023, 15:43
Static task
static1
Behavioral task
behavioral1
Sample
revised_invoice.exe
Resource
win7-20230712-en
Behavioral task
behavioral2
Sample
revised_invoice.exe
Resource
win10v2004-20230703-en
General
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Target
revised_invoice.exe
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Size
828KB
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MD5
aba5cc62cc5479e1f5f5c733d750520a
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SHA1
02670702f7c840e382edabab7933b5079112b2fe
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SHA256
f6bdba555d1356168f7f1581949ab5ca8d6b20e9a6495e0cfcef8d3b129638a0
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SHA512
2e17f86ff811d65d42a16424f439fb6cf236bd5785eb282830242755a081ef9bdefec051aeb5e853d2e326c36cccb0f97178269b562a736b17f10436280edcb5
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SSDEEP
12288:QEKaJFds+DAOBwjoe1qtWiRW95ZZUiGTrj4z1/c7:5dYjoeYWJdZvd/O
Malware Config
Extracted
snakekeylogger
Protocol: smtp- Host:
mail.qbangra.com - Port:
587 - Username:
[email protected] - Password:
QBangra2020 - Email To:
[email protected]
Signatures
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Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
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Snake Keylogger payload 2 IoCs
resource yara_rule behavioral2/memory/4428-151-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger behavioral2/memory/4428-200-0x00000000054F0000-0x0000000005500000-memory.dmp family_snakekeylogger -
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 32 checkip.dyndns.org -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1576 set thread context of 4428 1576 revised_invoice.exe 93 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 2808 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 13 IoCs
pid Process 1576 revised_invoice.exe 1576 revised_invoice.exe 4428 revised_invoice.exe 2140 powershell.exe 2140 powershell.exe 4428 revised_invoice.exe 4428 revised_invoice.exe 4428 revised_invoice.exe 4428 revised_invoice.exe 4428 revised_invoice.exe 4428 revised_invoice.exe 4428 revised_invoice.exe 4428 revised_invoice.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 1576 revised_invoice.exe Token: SeDebugPrivilege 4428 revised_invoice.exe Token: SeDebugPrivilege 2140 powershell.exe -
Suspicious use of WriteProcessMemory 14 IoCs
description pid Process procid_target PID 1576 wrote to memory of 2140 1576 revised_invoice.exe 89 PID 1576 wrote to memory of 2140 1576 revised_invoice.exe 89 PID 1576 wrote to memory of 2140 1576 revised_invoice.exe 89 PID 1576 wrote to memory of 2808 1576 revised_invoice.exe 91 PID 1576 wrote to memory of 2808 1576 revised_invoice.exe 91 PID 1576 wrote to memory of 2808 1576 revised_invoice.exe 91 PID 1576 wrote to memory of 4428 1576 revised_invoice.exe 93 PID 1576 wrote to memory of 4428 1576 revised_invoice.exe 93 PID 1576 wrote to memory of 4428 1576 revised_invoice.exe 93 PID 1576 wrote to memory of 4428 1576 revised_invoice.exe 93 PID 1576 wrote to memory of 4428 1576 revised_invoice.exe 93 PID 1576 wrote to memory of 4428 1576 revised_invoice.exe 93 PID 1576 wrote to memory of 4428 1576 revised_invoice.exe 93 PID 1576 wrote to memory of 4428 1576 revised_invoice.exe 93
Processes
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C:\Users\Admin\AppData\Local\Temp\revised_invoice.exe"C:\Users\Admin\AppData\Local\Temp\revised_invoice.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1576 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\VCYZNOqT.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2140
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\VCYZNOqT" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9EE.tmp"2⤵
- Creates scheduled task(s)
PID:2808
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C:\Users\Admin\AppData\Local\Temp\revised_invoice.exe"C:\Users\Admin\AppData\Local\Temp\revised_invoice.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4428
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1KB
MD58ec831f3e3a3f77e4a7b9cd32b48384c
SHA1d83f09fd87c5bd86e045873c231c14836e76a05c
SHA2567667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982
SHA51226bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
1KB
MD53926b5405542bcbb989f14889a355546
SHA12ff13fa0386f83398140d04f4d1652a2ad7e73cf
SHA256808197375c48812974adb4c788aebebee9555e2f9e36604c4c7018d868c51692
SHA512a0cec773d47d35b704db19bc234686a45d6ed849c67d08d605898dd70e1e77959430ff5410455035c74d12f3a3ba3d0d196cd60a676d3e48e8b6c665b078520c