snakekeylogger | b18e1e1ca2d4f97f568e87e71ae9f0791821c2c4e2bb3385fa81b5829c1122b1

General

Target

b2aeb4b06aabde854d9d2ddf06424178.exe
Size

1.4MB
MD5

b2aeb4b06aabde854d9d2ddf06424178
SHA1

07258d08ec2d9dafbced67f3b7ebf60cdb76268a
SHA256

b18e1e1ca2d4f97f568e87e71ae9f0791821c2c4e2bb3385fa81b5829c1122b1
SHA512

d89ad16ecea89f51369f4189db3ba12d80ed14f6e6c5a18a245300a20cfd8db91ab4a0ea286dfe90a8d22b1a15caf4d4aba818a14e35513e2bd52b9e90689482

Score

10^/10

snakekeylogger keylogger 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/4032-26-0x000000000046382E-mapping.dmp	family_snakekeylogger
behavioral2/memory/4032-30-0x0000000000800000-0x0000000000868000-memory.dmp	family_snakekeylogger

Executes dropped EXE 2 IoCs

Processes:

bsys.exeInstallUtil.exe

pid process

1060 bsys.exe
4032 InstallUtil.exe

pid	process
1060	bsys.exe
4032	InstallUtil.exe

Drops startup file 1 IoCs

Processes:

b2aeb4b06aabde854d9d2ddf06424178.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bsys.lnk	b2aeb4b06aabde854d9d2ddf06424178.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
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

15 checkip.dyndns.org
18 freegeoip.app
19 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:

bsys.exe

description pid process target process

PID 1060 set thread context of 4032 1060 bsys.exe InstallUtil.exe

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

description	pid	process	target process
PID 1060 set thread context of 4032	1060	bsys.exe	InstallUtil.exe

Suspicious behavior: EnumeratesProcesses 24 IoCs

Processes:

b2aeb4b06aabde854d9d2ddf06424178.exebsys.exeInstallUtil.exe

pid	process
728	b2aeb4b06aabde854d9d2ddf06424178.exe
728	b2aeb4b06aabde854d9d2ddf06424178.exe
728	b2aeb4b06aabde854d9d2ddf06424178.exe
728	b2aeb4b06aabde854d9d2ddf06424178.exe
728	b2aeb4b06aabde854d9d2ddf06424178.exe
728	b2aeb4b06aabde854d9d2ddf06424178.exe
728	b2aeb4b06aabde854d9d2ddf06424178.exe
728	b2aeb4b06aabde854d9d2ddf06424178.exe
728	b2aeb4b06aabde854d9d2ddf06424178.exe
728	b2aeb4b06aabde854d9d2ddf06424178.exe
728	b2aeb4b06aabde854d9d2ddf06424178.exe
728	b2aeb4b06aabde854d9d2ddf06424178.exe
728	b2aeb4b06aabde854d9d2ddf06424178.exe
728	b2aeb4b06aabde854d9d2ddf06424178.exe
728	b2aeb4b06aabde854d9d2ddf06424178.exe
1060	bsys.exe
1060	bsys.exe
4032	InstallUtil.exe
4032	InstallUtil.exe
4032	InstallUtil.exe
4032	InstallUtil.exe
4032	InstallUtil.exe
4032	InstallUtil.exe
4032	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

b2aeb4b06aabde854d9d2ddf06424178.exebsys.exeInstallUtil.exe

description	pid	process
Token: SeDebugPrivilege	728	b2aeb4b06aabde854d9d2ddf06424178.exe
Token: SeDebugPrivilege	1060	bsys.exe
Token: SeDebugPrivilege	4032	InstallUtil.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

b2aeb4b06aabde854d9d2ddf06424178.exebsys.exe

description	pid	process	target process
PID 728 wrote to memory of 1060	728	b2aeb4b06aabde854d9d2ddf06424178.exe	bsys.exe
PID 728 wrote to memory of 1060	728	b2aeb4b06aabde854d9d2ddf06424178.exe	bsys.exe
PID 728 wrote to memory of 1060	728	b2aeb4b06aabde854d9d2ddf06424178.exe	bsys.exe
PID 1060 wrote to memory of 4032	1060	bsys.exe	InstallUtil.exe
PID 1060 wrote to memory of 4032	1060	bsys.exe	InstallUtil.exe
PID 1060 wrote to memory of 4032	1060	bsys.exe	InstallUtil.exe
PID 1060 wrote to memory of 4032	1060	bsys.exe	InstallUtil.exe
PID 1060 wrote to memory of 4032	1060	bsys.exe	InstallUtil.exe
PID 1060 wrote to memory of 4032	1060	bsys.exe	InstallUtil.exe
PID 1060 wrote to memory of 4032	1060	bsys.exe	InstallUtil.exe
PID 1060 wrote to memory of 4032	1060	bsys.exe	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\b2aeb4b06aabde854d9d2ddf06424178.exe
"C:\Users\Admin\AppData\Local\Temp\b2aeb4b06aabde854d9d2ddf06424178.exe"
1⤵
- Drops startup file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:728

C:\Users\Admin\bsys.exe
"C:\Users\Admin\bsys.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1060

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:4032

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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\bsys.exe
MD5
b2aeb4b06aabde854d9d2ddf06424178

SHA1
07258d08ec2d9dafbced67f3b7ebf60cdb76268a

SHA256
b18e1e1ca2d4f97f568e87e71ae9f0791821c2c4e2bb3385fa81b5829c1122b1

SHA512
d89ad16ecea89f51369f4189db3ba12d80ed14f6e6c5a18a245300a20cfd8db91ab4a0ea286dfe90a8d22b1a15caf4d4aba818a14e35513e2bd52b9e90689482

Download Submit
C:\Users\Admin\bsys.exe
MD5
b2aeb4b06aabde854d9d2ddf06424178

SHA1
07258d08ec2d9dafbced67f3b7ebf60cdb76268a

SHA256
b18e1e1ca2d4f97f568e87e71ae9f0791821c2c4e2bb3385fa81b5829c1122b1

SHA512
d89ad16ecea89f51369f4189db3ba12d80ed14f6e6c5a18a245300a20cfd8db91ab4a0ea286dfe90a8d22b1a15caf4d4aba818a14e35513e2bd52b9e90689482

Download Submit
memory/728-9-0x0000000007DF0000-0x0000000007DF1000-memory.dmp

Filesize
4KB

Download
memory/728-8-0x0000000002E50000-0x0000000002E51000-memory.dmp

Filesize
4KB

Download
memory/728-2-0x0000000073E00000-0x00000000744EE000-memory.dmp

Filesize
6.9MB

Download
memory/728-10-0x00000000055C1000-0x00000000055C2000-memory.dmp

Filesize
4KB

Download
memory/728-3-0x0000000000A60000-0x0000000000A61000-memory.dmp

Filesize
4KB

Download
memory/728-7-0x00000000053B0000-0x00000000053CE000-memory.dmp

Filesize
120KB

Download
memory/728-6-0x00000000055C0000-0x00000000055C1000-memory.dmp

Filesize
4KB

Download
memory/728-5-0x0000000005450000-0x0000000005451000-memory.dmp

Filesize
4KB

Download
memory/1060-24-0x0000000004E31000-0x0000000004E32000-memory.dmp

Filesize
4KB

Download
memory/1060-22-0x0000000008290000-0x000000000829B000-memory.dmp

Filesize
44KB

Download
memory/1060-23-0x000000000B740000-0x000000000B741000-memory.dmp

Filesize
4KB

Download
memory/1060-21-0x0000000004E30000-0x0000000004E31000-memory.dmp

Filesize
4KB

Download
memory/1060-14-0x0000000073E00000-0x00000000744EE000-memory.dmp

Filesize
6.9MB

Download
memory/1060-11-0x0000000000000000-mapping.dmp

Download
memory/4032-26-0x000000000046382E-mapping.dmp

Download
memory/4032-29-0x0000000073E10000-0x00000000744FE000-memory.dmp

Filesize
6.9MB

Download
memory/4032-30-0x0000000000800000-0x0000000000868000-memory.dmp

Filesize
416KB

Download
memory/4032-32-0x0000000005240000-0x0000000005241000-memory.dmp

Filesize
4KB

Download
memory/4032-34-0x0000000004D80000-0x0000000004D81000-memory.dmp

Filesize
4KB

Download
memory/4032-35-0x0000000005ED0000-0x0000000005ED1000-memory.dmp

Filesize
4KB

Download
memory/4032-37-0x0000000005E80000-0x0000000005E81000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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