snakekeylogger | a9ba86161cb89de53aed44c5bc25ffd09dc5c8091f87e52618a3ef009d381c46

General

Target

GFS_03781.xls.exe
Size

1.2MB
MD5

9919da45b26135c4e371eb596f9697e9
SHA1

00766ab33ae85e995be911f9ac425a00a2d69fca
SHA256

a9ba86161cb89de53aed44c5bc25ffd09dc5c8091f87e52618a3ef009d381c46
SHA512

a48d1c9d5ea5aadc571a314bff7d1dd9cb6cc0fb07eada1fba9577686ebfbd6e9ead99c30eb5f125b4bb958c3e3014ad70c874d047e0231cb3e4d0b8ddbb6601

Score

10^/10

snakekeylogger keylogger persistence ransomware spyware stealer

Malware Config

Signatures

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

Snake Keylogger Payload 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3028-28-0x0000000000463E1E-mapping.dmp	family_snakekeylogger
behavioral2/memory/3028-32-0x0000000000430000-0x0000000000498000-memory.dmp	family_snakekeylogger

Executes dropped EXE 2 IoCs

Processes:

amgu.exeInstallUtil.exe

pid process

656 amgu.exe
3028 InstallUtil.exe
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware

Data from Local System
T1005

Credentials in Files
T1081

pid	process
656	amgu.exe
3028	InstallUtil.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

reg.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run\pik = "C:\\Users\\Admin\\amgu.exe"	reg.exe

Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

19 freegeoip.app
15 checkip.dyndns.org
18 freegeoip.app
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
ransomware

System Information Discovery
T1082
Suspicious use of SetThreadContext 1 IoCs

Processes:

amgu.exe

description pid process target process

PID 656 set thread context of 3028 656 amgu.exe InstallUtil.exe

flow	ioc
19	freegeoip.app
15	checkip.dyndns.org
18	freegeoip.app

description	pid	process	target process
PID 656 set thread context of 3028	656	amgu.exe	InstallUtil.exe

Suspicious behavior: EnumeratesProcesses 24 IoCs

Processes:

GFS_03781.xls.exeamgu.exeInstallUtil.exe

pid	process
812	GFS_03781.xls.exe
812	GFS_03781.xls.exe
812	GFS_03781.xls.exe
812	GFS_03781.xls.exe
812	GFS_03781.xls.exe
812	GFS_03781.xls.exe
812	GFS_03781.xls.exe
812	GFS_03781.xls.exe
812	GFS_03781.xls.exe
812	GFS_03781.xls.exe
812	GFS_03781.xls.exe
812	GFS_03781.xls.exe
812	GFS_03781.xls.exe
812	GFS_03781.xls.exe
812	GFS_03781.xls.exe
656	amgu.exe
656	amgu.exe
3028	InstallUtil.exe
3028	InstallUtil.exe
3028	InstallUtil.exe
3028	InstallUtil.exe
3028	InstallUtil.exe
3028	InstallUtil.exe
3028	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

GFS_03781.xls.exeamgu.exeInstallUtil.exe

description pid process

Token: SeDebugPrivilege 812 GFS_03781.xls.exe
Token: SeDebugPrivilege 656 amgu.exe
Token: SeDebugPrivilege 3028 InstallUtil.exe

description	pid	process
Token: SeDebugPrivilege	812	GFS_03781.xls.exe
Token: SeDebugPrivilege	656	amgu.exe
Token: SeDebugPrivilege	3028	InstallUtil.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

GFS_03781.xls.execmd.exeamgu.exe

description	pid	process	target process
PID 812 wrote to memory of 192	812	GFS_03781.xls.exe	cmd.exe
PID 812 wrote to memory of 192	812	GFS_03781.xls.exe	cmd.exe
PID 812 wrote to memory of 192	812	GFS_03781.xls.exe	cmd.exe
PID 192 wrote to memory of 2196	192	cmd.exe	reg.exe
PID 192 wrote to memory of 2196	192	cmd.exe	reg.exe
PID 192 wrote to memory of 2196	192	cmd.exe	reg.exe
PID 812 wrote to memory of 656	812	GFS_03781.xls.exe	amgu.exe
PID 812 wrote to memory of 656	812	GFS_03781.xls.exe	amgu.exe
PID 812 wrote to memory of 656	812	GFS_03781.xls.exe	amgu.exe
PID 656 wrote to memory of 3028	656	amgu.exe	InstallUtil.exe
PID 656 wrote to memory of 3028	656	amgu.exe	InstallUtil.exe
PID 656 wrote to memory of 3028	656	amgu.exe	InstallUtil.exe
PID 656 wrote to memory of 3028	656	amgu.exe	InstallUtil.exe
PID 656 wrote to memory of 3028	656	amgu.exe	InstallUtil.exe
PID 656 wrote to memory of 3028	656	amgu.exe	InstallUtil.exe
PID 656 wrote to memory of 3028	656	amgu.exe	InstallUtil.exe
PID 656 wrote to memory of 3028	656	amgu.exe	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\GFS_03781.xls.exe
"C:\Users\Admin\AppData\Local\Temp\GFS_03781.xls.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:812

C:\Windows\SysWOW64\cmd.exe
"cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "pik" /t REG_SZ /d "C:\Users\Admin\amgu.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:192

C:\Windows\SysWOW64\reg.exe
REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "pik" /t REG_SZ /d "C:\Users\Admin\amgu.exe"
3⤵
- Adds Run key to start application
PID:2196

C:\Users\Admin\amgu.exe
"C:\Users\Admin\amgu.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:656

C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
"C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3028

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

Credentials in Files

3

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

3

T1005

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
C:\Users\Admin\amgu.exe
MD5
9919da45b26135c4e371eb596f9697e9

SHA1
00766ab33ae85e995be911f9ac425a00a2d69fca

SHA256
a9ba86161cb89de53aed44c5bc25ffd09dc5c8091f87e52618a3ef009d381c46

SHA512
a48d1c9d5ea5aadc571a314bff7d1dd9cb6cc0fb07eada1fba9577686ebfbd6e9ead99c30eb5f125b4bb958c3e3014ad70c874d047e0231cb3e4d0b8ddbb6601

Download Submit
C:\Users\Admin\amgu.exe
MD5
9919da45b26135c4e371eb596f9697e9

SHA1
00766ab33ae85e995be911f9ac425a00a2d69fca

SHA256
a9ba86161cb89de53aed44c5bc25ffd09dc5c8091f87e52618a3ef009d381c46

SHA512
a48d1c9d5ea5aadc571a314bff7d1dd9cb6cc0fb07eada1fba9577686ebfbd6e9ead99c30eb5f125b4bb958c3e3014ad70c874d047e0231cb3e4d0b8ddbb6601

Download Submit
memory/192-10-0x0000000000000000-mapping.dmp

Download
memory/656-26-0x0000000004DE1000-0x0000000004DE2000-memory.dmp

Filesize
4KB

Download
memory/656-25-0x000000000B560000-0x000000000B561000-memory.dmp

Filesize
4KB

Download
memory/656-24-0x0000000007540000-0x000000000754B000-memory.dmp

Filesize
44KB

Download
memory/656-21-0x0000000004DE0000-0x0000000004DE1000-memory.dmp

Filesize
4KB

Download
memory/656-16-0x0000000074070000-0x000000007475E000-memory.dmp

Filesize
6.9MB

Download
memory/656-13-0x0000000000000000-mapping.dmp

Download
memory/812-9-0x0000000005060000-0x0000000005061000-memory.dmp

Filesize
4KB

Download
memory/812-3-0x0000000000380000-0x0000000000381000-memory.dmp

Filesize
4KB

Download
memory/812-2-0x0000000074070000-0x000000007475E000-memory.dmp

Filesize
6.9MB

Download
memory/812-8-0x00000000076F0000-0x00000000076F1000-memory.dmp

Filesize
4KB

Download
memory/812-7-0x0000000002740000-0x0000000002741000-memory.dmp

Filesize
4KB

Download
memory/812-6-0x0000000002720000-0x000000000273E000-memory.dmp

Filesize
120KB

Download
memory/812-12-0x0000000005061000-0x0000000005062000-memory.dmp

Filesize
4KB

Download
memory/812-5-0x0000000004D70000-0x0000000004D71000-memory.dmp

Filesize
4KB

Download
memory/2196-11-0x0000000000000000-mapping.dmp

Download
memory/3028-28-0x0000000000463E1E-mapping.dmp

Download
memory/3028-31-0x0000000074070000-0x000000007475E000-memory.dmp

Filesize
6.9MB

Download
memory/3028-32-0x0000000000430000-0x0000000000498000-memory.dmp

Filesize
416KB

Download
memory/3028-34-0x0000000004ED0000-0x0000000004ED1000-memory.dmp

Filesize
4KB

Download
memory/3028-36-0x0000000004A10000-0x0000000004A11000-memory.dmp

Filesize
4KB

Download
memory/3028-37-0x0000000005B20000-0x0000000005B21000-memory.dmp

Filesize
4KB

Download
memory/3028-39-0x0000000005AC0000-0x0000000005AC1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads