snakekeylogger | cd4af46185777fd2e5fc2bed90454d28f54273e797afc77ae8230df60b26f3bb

General

Target

flosh.exe
Size

52KB
MD5

fc98b95e8ff90b78895ed01d5a6dd1d3
SHA1

526aeb6d7216a9567b619b56ef0af0693bae72a9
SHA256

cd4af46185777fd2e5fc2bed90454d28f54273e797afc77ae8230df60b26f3bb
SHA512

830bd621b0109929812c90fa6c352c98dd6aa424927f499c2658dbe8297da9449268ead089639414c55e35cd9185fec1a57a4f03433a3513f7e442bcfa4a9694

Score

10^/10

snakekeylogger collection keylogger persistence stealer

Malware Config

Extracted

Family

snakekeylogger

C2

https://api.telegram.org/bot5583198829:AAHbRGAnlJ9Tg3ETPxGtj_jZ8tVhm4DB4io/sendMessage?chat_id=1148000519

Signatures

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

Snake Keylogger Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4144-143-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger

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:

flosh.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation flosh.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation	flosh.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

InstallUtil.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\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:

flosh.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Jygbicka = "\"C:\\Users\\Admin\\AppData\\Roaming\\Puklbng\\Jygbicka.exe\""	flosh.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

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

Processes:

flosh.exe

description pid process target process

PID 1596 set thread context of 4144 1596 flosh.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
Suspicious behavior: EnumeratesProcesses 9 IoCs

Processes:

powershell.exeflosh.exeInstallUtil.exe

pid process

3376 powershell.exe
3376 powershell.exe
1596 flosh.exe
1596 flosh.exe
1596 flosh.exe
1596 flosh.exe
1596 flosh.exe
1596 flosh.exe
4144 InstallUtil.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

flosh.exepowershell.exeInstallUtil.exe

description pid process

Token: SeDebugPrivilege 1596 flosh.exe
Token: SeDebugPrivilege 3376 powershell.exe
Token: SeDebugPrivilege 4144 InstallUtil.exe

flow	ioc
21	checkip.dyndns.org

description	pid	process	target process
PID 1596 set thread context of 4144	1596	flosh.exe	InstallUtil.exe

pid	process
3376	powershell.exe
3376	powershell.exe
1596	flosh.exe
1596	flosh.exe
1596	flosh.exe
1596	flosh.exe
1596	flosh.exe
1596	flosh.exe
4144	InstallUtil.exe

description	pid	process
Token: SeDebugPrivilege	1596	flosh.exe
Token: SeDebugPrivilege	3376	powershell.exe
Token: SeDebugPrivilege	4144	InstallUtil.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

flosh.exe

description	pid	process	target process
PID 1596 wrote to memory of 3376	1596	flosh.exe	powershell.exe
PID 1596 wrote to memory of 3376	1596	flosh.exe	powershell.exe
PID 1596 wrote to memory of 3376	1596	flosh.exe	powershell.exe
PID 1596 wrote to memory of 5028	1596	flosh.exe	InstallUtil.exe
PID 1596 wrote to memory of 5028	1596	flosh.exe	InstallUtil.exe
PID 1596 wrote to memory of 5028	1596	flosh.exe	InstallUtil.exe
PID 1596 wrote to memory of 4144	1596	flosh.exe	InstallUtil.exe
PID 1596 wrote to memory of 4144	1596	flosh.exe	InstallUtil.exe
PID 1596 wrote to memory of 4144	1596	flosh.exe	InstallUtil.exe
PID 1596 wrote to memory of 4144	1596	flosh.exe	InstallUtil.exe
PID 1596 wrote to memory of 4144	1596	flosh.exe	InstallUtil.exe
PID 1596 wrote to memory of 4144	1596	flosh.exe	InstallUtil.exe
PID 1596 wrote to memory of 4144	1596	flosh.exe	InstallUtil.exe
PID 1596 wrote to memory of 4144	1596	flosh.exe	InstallUtil.exe

outlook_office_path 1 IoCs

Processes:

InstallUtil.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\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-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\flosh.exe
"C:\Users\Admin\AppData\Local\Temp\flosh.exe"
1⤵
- 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:1596

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMgAwAA==
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3376

C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
2⤵
PID:5028

C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:4144

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

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

memory/1596-130-0x0000000000CF0000-0x0000000000D04000-memory.dmp

Filesize
80KB

Download
memory/1596-140-0x0000000006A70000-0x0000000006B02000-memory.dmp

Filesize
584KB

Download
memory/3376-138-0x0000000007790000-0x0000000007E0A000-memory.dmp

Filesize
6.5MB

Download
memory/3376-139-0x00000000066B0000-0x00000000066CA000-memory.dmp

Filesize
104KB

Download
memory/3376-134-0x00000000051F0000-0x0000000005212000-memory.dmp

Filesize
136KB

Download
memory/3376-135-0x0000000005AC0000-0x0000000005B26000-memory.dmp

Filesize
408KB

Download
memory/3376-136-0x0000000005B30000-0x0000000005B96000-memory.dmp

Filesize
408KB

Download
memory/3376-137-0x00000000061A0000-0x00000000061BE000-memory.dmp

Filesize
120KB

Download
memory/3376-132-0x0000000002890000-0x00000000028C6000-memory.dmp

Filesize
216KB

Download
memory/3376-133-0x0000000005390000-0x00000000059B8000-memory.dmp

Filesize
6.2MB

Download
memory/3376-131-0x0000000000000000-mapping.dmp

Download
memory/4144-142-0x0000000000000000-mapping.dmp

Download
memory/4144-143-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/4144-144-0x0000000005AF0000-0x0000000006094000-memory.dmp

Filesize
5.6MB

Download
memory/4144-145-0x00000000055E0000-0x000000000567C000-memory.dmp

Filesize
624KB

Download
memory/4144-146-0x0000000006660000-0x0000000006822000-memory.dmp

Filesize
1.8MB

Download
memory/4144-147-0x00000000065E0000-0x00000000065EA000-memory.dmp

Filesize
40KB

Download
memory/5028-141-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads