snakekeylogger | 7e47e3f0546d15968a9feab556f1b5630b2ede65a31db2e488c7a51e059ba280

General

Target

STOWAGE PLAN.xll
Size

1.7MB
MD5

6ea1c38ca441834adead2a04cb8f5d8a
SHA1

c1fe55edbca69ee37a2378c957b9c0c1c85471d8
SHA256

7e47e3f0546d15968a9feab556f1b5630b2ede65a31db2e488c7a51e059ba280
SHA512

23eaf7841fa1b11d86a2e9ffc7874a669f4cd3bf68b4ecc03a7eb6a013dc5f2a6a62393f01f6bb4b4b2b72bddf908ca813ee26ae016a5e0fa662604a5a0736fe

Score

10^/10

snakekeylogger collection keylogger persistence stealer suricata

Malware Config

Extracted

Language

xlm4.0

Source

Extracted

Family

snakekeylogger

C2

https://api.telegram.org/bot1897716112:AAEAtOCkOV8umHBB93Og24bkiIdUKReGK44/sendMessage?chat_id=1745211648

Signatures

Process spawned unexpected child process 2 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

cmd.execmd.exe

description	pid	pid_target	process	target process
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4492	4832	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3956	4832	cmd.exe	EXCEL.EXE

Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
stealer keylogger snakekeylogger

Snake Keylogger Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/768-167-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger

suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile
suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile
suricata
Downloads MZ/PE file
Executes dropped EXE 1 IoCs

Processes:

appMTBYNNHMVY.txt.exe

pid process

3372 appMTBYNNHMVY.txt.exe

pid	process
3372	appMTBYNNHMVY.txt.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

appMTBYNNHMVY.txt.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation	appMTBYNNHMVY.txt.exe

Loads dropped DLL 2 IoCs

Processes:

EXCEL.EXE

pid process

4832 EXCEL.EXE
4832 EXCEL.EXE

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

InstallUtil.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

appMTBYNNHMVY.txt.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Rrfta = "\"C:\\Users\\Admin\\AppData\\Roaming\\Hbxhwj\\Rrfta.exe\""	appMTBYNNHMVY.txt.exe

Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

54 checkip.dyndns.org
Suspicious use of SetThreadContext 1 IoCs

Processes:

appMTBYNNHMVY.txt.exe

description pid process target process

PID 3372 set thread context of 768 3372 appMTBYNNHMVY.txt.exe InstallUtil.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

flow	ioc
54	checkip.dyndns.org

description	pid	process	target process
PID 3372 set thread context of 768	3372	appMTBYNNHMVY.txt.exe	InstallUtil.exe

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

4832 EXCEL.EXE
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

powershell.exeappMTBYNNHMVY.txt.exeInstallUtil.exe

pid process

928 powershell.exe
928 powershell.exe
3372 appMTBYNNHMVY.txt.exe
3372 appMTBYNNHMVY.txt.exe
768 InstallUtil.exe

pid	process
928	powershell.exe
928	powershell.exe
3372	appMTBYNNHMVY.txt.exe
3372	appMTBYNNHMVY.txt.exe
768	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

EXCEL.EXEappMTBYNNHMVY.txt.exepowershell.exeInstallUtil.exe

description	pid	process
Token: SeDebugPrivilege	4832	EXCEL.EXE
Token: SeDebugPrivilege	3372	appMTBYNNHMVY.txt.exe
Token: SeDebugPrivilege	928	powershell.exe
Token: SeDebugPrivilege	768	InstallUtil.exe

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
4832	EXCEL.EXE
4832	EXCEL.EXE
4832	EXCEL.EXE
4832	EXCEL.EXE
4832	EXCEL.EXE
4832	EXCEL.EXE
4832	EXCEL.EXE
4832	EXCEL.EXE
4832	EXCEL.EXE
4832	EXCEL.EXE
4832	EXCEL.EXE
4832	EXCEL.EXE

Suspicious use of WriteProcessMemory 22 IoCs

Processes:

EXCEL.EXEcmd.execmd.exeappMTBYNNHMVY.txt.exe

description	pid	process	target process
PID 4832 wrote to memory of 4492	4832	EXCEL.EXE	cmd.exe
PID 4832 wrote to memory of 4492	4832	EXCEL.EXE	cmd.exe
PID 4492 wrote to memory of 2748	4492	cmd.exe	certutil.exe
PID 4492 wrote to memory of 2748	4492	cmd.exe	certutil.exe
PID 4832 wrote to memory of 3956	4832	EXCEL.EXE	cmd.exe
PID 4832 wrote to memory of 3956	4832	EXCEL.EXE	cmd.exe
PID 3956 wrote to memory of 4892	3956	cmd.exe	certutil.exe
PID 3956 wrote to memory of 4892	3956	cmd.exe	certutil.exe
PID 4832 wrote to memory of 3372	4832	EXCEL.EXE	appMTBYNNHMVY.txt.exe
PID 4832 wrote to memory of 3372	4832	EXCEL.EXE	appMTBYNNHMVY.txt.exe
PID 4832 wrote to memory of 3372	4832	EXCEL.EXE	appMTBYNNHMVY.txt.exe
PID 3372 wrote to memory of 928	3372	appMTBYNNHMVY.txt.exe	powershell.exe
PID 3372 wrote to memory of 928	3372	appMTBYNNHMVY.txt.exe	powershell.exe
PID 3372 wrote to memory of 928	3372	appMTBYNNHMVY.txt.exe	powershell.exe
PID 3372 wrote to memory of 768	3372	appMTBYNNHMVY.txt.exe	InstallUtil.exe
PID 3372 wrote to memory of 768	3372	appMTBYNNHMVY.txt.exe	InstallUtil.exe
PID 3372 wrote to memory of 768	3372	appMTBYNNHMVY.txt.exe	InstallUtil.exe
PID 3372 wrote to memory of 768	3372	appMTBYNNHMVY.txt.exe	InstallUtil.exe
PID 3372 wrote to memory of 768	3372	appMTBYNNHMVY.txt.exe	InstallUtil.exe
PID 3372 wrote to memory of 768	3372	appMTBYNNHMVY.txt.exe	InstallUtil.exe
PID 3372 wrote to memory of 768	3372	appMTBYNNHMVY.txt.exe	InstallUtil.exe
PID 3372 wrote to memory of 768	3372	appMTBYNNHMVY.txt.exe	InstallUtil.exe

outlook_office_path 1 IoCs

Processes:

InstallUtil.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

outlook_win_path 1 IoCs

Processes:

InstallUtil.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\STOWAGE PLAN.xll"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4832

C:\Windows\SYSTEM32\cmd.exe
"cmd.exe" /C certutil -decode C:\Users\Admin\Downloads\appMTBYNNHMVY.txt C:\Users\Admin\Downloads\appMTBYNNHMVY.txt.xlsx
2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:4492

C:\Windows\system32\certutil.exe
certutil -decode C:\Users\Admin\Downloads\appMTBYNNHMVY.txt C:\Users\Admin\Downloads\appMTBYNNHMVY.txt.xlsx
3⤵
PID:2748

C:\Windows\SYSTEM32\cmd.exe
"cmd.exe" /C certutil -decode C:\Users\Admin\Downloads\appMTBYNNHMVY.txt C:\Users\Admin\Downloads\appMTBYNNHMVY.txt.exe &
2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:3956

C:\Windows\system32\certutil.exe
certutil -decode C:\Users\Admin\Downloads\appMTBYNNHMVY.txt C:\Users\Admin\Downloads\appMTBYNNHMVY.txt.exe
3⤵
PID:4892

C:\Users\Admin\Downloads\appMTBYNNHMVY.txt.exe
"C:\Users\Admin\Downloads\appMTBYNNHMVY.txt.exe"
2⤵
- Executes dropped EXE
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3372

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMQAwAA==
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:928

C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
3⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:768

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

3

T1012

System Information Discovery

4

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\STOWAGE PLAN.xll
Filesize
1.7MB

MD5
6ea1c38ca441834adead2a04cb8f5d8a

SHA1
c1fe55edbca69ee37a2378c957b9c0c1c85471d8

SHA256
7e47e3f0546d15968a9feab556f1b5630b2ede65a31db2e488c7a51e059ba280

SHA512
23eaf7841fa1b11d86a2e9ffc7874a669f4cd3bf68b4ecc03a7eb6a013dc5f2a6a62393f01f6bb4b4b2b72bddf908ca813ee26ae016a5e0fa662604a5a0736fe

Download Submit
C:\Users\Admin\AppData\Local\Temp\STOWAGE PLAN.xll
Filesize
1.7MB

MD5
6ea1c38ca441834adead2a04cb8f5d8a

SHA1
c1fe55edbca69ee37a2378c957b9c0c1c85471d8

SHA256
7e47e3f0546d15968a9feab556f1b5630b2ede65a31db2e488c7a51e059ba280

SHA512
23eaf7841fa1b11d86a2e9ffc7874a669f4cd3bf68b4ecc03a7eb6a013dc5f2a6a62393f01f6bb4b4b2b72bddf908ca813ee26ae016a5e0fa662604a5a0736fe

Download Submit
C:\Users\Admin\Downloads\appMTBYNNHMVY.txt
Filesize
24KB

MD5
fbefbe8ae4a09ba8018b2d7ff9143f3e

SHA1
c03cd7561d6a64f754c65bda8faa5a434eb04e0b

SHA256
881a15d10e000d20b2179290d340e1234f46301569f19e34fe06f82f37cb32c8

SHA512
490167845d6930e10339e83a5e60181e78a718b8975eccb6bb104467020b4fd4b080be20e463e5bfe681549e843999a2b90b3f48db737229e8a0bdc198af7189

Download Submit
C:\Users\Admin\Downloads\appMTBYNNHMVY.txt
Filesize
56B

MD5
7b26a5b21212e4cec867bff58478af37

SHA1
f3449915ec0554c3ec7a32d1239e7e9e8cb53eb2

SHA256
960e7eaf0228ddbb7dda410c09e5094d73475a5b1d05825fe9770ef7cf3ceb4d

SHA512
5be5e0f7132a91c671ef28b4855cfbfe26fbe22e98482f79bcf56bcff22bde9b8765d999fab40bca7e83cbd67a44041c6ffb28ca55e474c1acb42d3e05e238cc

Download Submit
C:\Users\Admin\Downloads\appMTBYNNHMVY.txt.exe
Filesize
174KB

MD5
e4a741c46581b1e1b66ebae36db1d676

SHA1
438d8b0da4fbe056d1fef528b013d31999ea276e

SHA256
b4e8875282bb35cda28a68b17840e5a4ab771f64af7cdfb9322909f59bd9139e

SHA512
7eb57eb07c8009c369c178ab3df9d19d2e9b32310facf05f417aadc30ca4301053a6fcb3f5e180d39bae546f51c2fdac1bdbe09d76667e9463ab006d76a20d83

Download Submit
C:\Users\Admin\Downloads\appMTBYNNHMVY.txt.exe
Filesize
174KB

MD5
e4a741c46581b1e1b66ebae36db1d676

SHA1
438d8b0da4fbe056d1fef528b013d31999ea276e

SHA256
b4e8875282bb35cda28a68b17840e5a4ab771f64af7cdfb9322909f59bd9139e

SHA512
7eb57eb07c8009c369c178ab3df9d19d2e9b32310facf05f417aadc30ca4301053a6fcb3f5e180d39bae546f51c2fdac1bdbe09d76667e9463ab006d76a20d83

Download Submit
C:\Users\Admin\Downloads\appMTBYNNHMVY.txt.xlsx
Filesize
18KB

MD5
aea065e068a1c885c5c82b9da16de628

SHA1
f6c1af23d9e30b77160bf0da4f56eaef94d853c1

SHA256
fcd49a887692286cd815e911fd667f9323152c4d13e37020f065aabd023ab0ca

SHA512
092247866bca90694c95e7d1db658baba7fd88c192fd8e2c132de896541b3a09b74b17055022dbb03789814a0a31c3ae57072e6ef6f3c88f2cd23c0ca8275c8a

Download Submit
memory/768-167-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/768-168-0x00000000057F0000-0x0000000005D94000-memory.dmp

Filesize
5.6MB

Download
memory/768-166-0x0000000000000000-mapping.dmp

Download
memory/768-171-0x0000000006280000-0x000000000628A000-memory.dmp

Filesize
40KB

Download
memory/768-170-0x0000000006400000-0x00000000065C2000-memory.dmp

Filesize
1.8MB

Download
memory/768-169-0x00000000052E0000-0x000000000537C000-memory.dmp

Filesize
624KB

Download
memory/928-154-0x0000000000000000-mapping.dmp

Download
memory/928-164-0x0000000006870000-0x000000000688A000-memory.dmp

Filesize
104KB

Download
memory/928-160-0x0000000005CC0000-0x0000000005D26000-memory.dmp

Filesize
408KB

Download
memory/928-159-0x00000000053C0000-0x00000000053E2000-memory.dmp

Filesize
136KB

Download
memory/928-161-0x0000000005D30000-0x0000000005D96000-memory.dmp

Filesize
408KB

Download
memory/928-157-0x00000000054E0000-0x0000000005B08000-memory.dmp

Filesize
6.2MB

Download
memory/928-162-0x0000000006390000-0x00000000063AE000-memory.dmp

Filesize
120KB

Download
memory/928-163-0x00000000079C0000-0x000000000803A000-memory.dmp

Filesize
6.5MB

Download
memory/928-155-0x0000000004DC0000-0x0000000004DF6000-memory.dmp

Filesize
216KB

Download
memory/2748-144-0x0000000000000000-mapping.dmp

Download
memory/3372-153-0x00000000005A0000-0x00000000005D2000-memory.dmp

Filesize
200KB

Download
memory/3372-150-0x0000000000000000-mapping.dmp

Download
memory/3372-165-0x000000002A900000-0x000000002A992000-memory.dmp

Filesize
584KB

Download
memory/3956-147-0x0000000000000000-mapping.dmp

Download
memory/4492-143-0x0000000000000000-mapping.dmp

Download
memory/4832-136-0x00007FFAA2CD0000-0x00007FFAA2CE0000-memory.dmp

Filesize
64KB

Download
memory/4832-173-0x00007FFAA4EF0000-0x00007FFAA4F00000-memory.dmp

Filesize
64KB

Download
memory/4832-134-0x00007FFAA4EF0000-0x00007FFAA4F00000-memory.dmp

Filesize
64KB

Download
memory/4832-133-0x00007FFAA4EF0000-0x00007FFAA4F00000-memory.dmp

Filesize
64KB

Download
memory/4832-141-0x00007FFABC2C0000-0x00007FFABCD81000-memory.dmp

Filesize
10.8MB

Download
memory/4832-138-0x00000111D9C10000-0x00000111D9DE3000-memory.dmp

Filesize
1.8MB

Download
memory/4832-156-0x00007FFABC2C0000-0x00007FFABCD81000-memory.dmp

Filesize
10.8MB

Download
memory/4832-158-0x00000111F314C000-0x00000111F314F000-memory.dmp

Filesize
12KB

Download
memory/4832-177-0x00007FFABC2C0000-0x00007FFABCD81000-memory.dmp

Filesize
10.8MB

Download
memory/4832-135-0x00007FFAA2CD0000-0x00007FFAA2CE0000-memory.dmp

Filesize
64KB

Download
memory/4832-142-0x00000111F314C000-0x00000111F314F000-memory.dmp

Filesize
12KB

Download
memory/4832-132-0x00007FFAA4EF0000-0x00007FFAA4F00000-memory.dmp

Filesize
64KB

Download
memory/4832-131-0x00007FFAA4EF0000-0x00007FFAA4F00000-memory.dmp

Filesize
64KB

Download
memory/4832-130-0x00007FFAA4EF0000-0x00007FFAA4F00000-memory.dmp

Filesize
64KB

Download
memory/4832-174-0x00007FFAA4EF0000-0x00007FFAA4F00000-memory.dmp

Filesize
64KB

Download
memory/4832-175-0x00007FFAA4EF0000-0x00007FFAA4F00000-memory.dmp

Filesize
64KB

Download
memory/4832-176-0x00007FFAA4EF0000-0x00007FFAA4F00000-memory.dmp

Filesize
64KB

Download
memory/4892-148-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads