snakekeylogger | 14dc0be4a9f52bb8c9614621b4d521ed56592dcde2483b6ff099d061bcb7cada

General

Target

IMG_9501.EXE
Size

1.4MB
MD5

e3d9793d14ec64e2398c709a3483c212
SHA1

6a86e4ecd6529345e29fb461b59787a7560f4865
SHA256

14dc0be4a9f52bb8c9614621b4d521ed56592dcde2483b6ff099d061bcb7cada
SHA512

f3c0a8818fcc5bb09bd76fad45d49bb7af155e5c77bb58aac66323efb71c0a4853813c3ef964694e1b8df3e325a0602ec683f478a575616947a7624b8406128f

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 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/524-26-0x0000000000400000-0x0000000000468000-memory.dmp	family_snakekeylogger
behavioral1/memory/524-27-0x000000000046364E-mapping.dmp	family_snakekeylogger
behavioral1/memory/524-30-0x0000000000400000-0x0000000000468000-memory.dmp	family_snakekeylogger

Executes dropped EXE 2 IoCs

Processes:

nsou.exeInstallUtil.exe

pid process

332 nsou.exe
524 InstallUtil.exe
Loads dropped DLL 2 IoCs

Processes:

IMG_9501.EXEnsou.exe

pid process

1632 IMG_9501.EXE
332 nsou.exe
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
332	nsou.exe
524	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-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\naets = "C:\\Users\\Admin\\AppData\\Roaming\\nsou.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

5 checkip.dyndns.org
10 freegeoip.app
11 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:

nsou.exe

description pid process target process

PID 332 set thread context of 524 332 nsou.exe InstallUtil.exe

flow	ioc
5	checkip.dyndns.org
10	freegeoip.app
11	freegeoip.app

description	pid	process	target process
PID 332 set thread context of 524	332	nsou.exe	InstallUtil.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

Processes:

IMG_9501.EXEnsou.exeInstallUtil.exe

pid	process
1632	IMG_9501.EXE
1632	IMG_9501.EXE
1632	IMG_9501.EXE
1632	IMG_9501.EXE
1632	IMG_9501.EXE
332	nsou.exe
332	nsou.exe
524	InstallUtil.exe
524	InstallUtil.exe
524	InstallUtil.exe
524	InstallUtil.exe
524	InstallUtil.exe
524	InstallUtil.exe
524	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

IMG_9501.EXEnsou.exeInstallUtil.exe

description pid process

Token: SeDebugPrivilege 1632 IMG_9501.EXE
Token: SeDebugPrivilege 332 nsou.exe
Token: SeDebugPrivilege 524 InstallUtil.exe

description	pid	process
Token: SeDebugPrivilege	1632	IMG_9501.EXE
Token: SeDebugPrivilege	332	nsou.exe
Token: SeDebugPrivilege	524	InstallUtil.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

IMG_9501.EXEcmd.exensou.exe

description	pid	process	target process
PID 1632 wrote to memory of 1620	1632	IMG_9501.EXE	cmd.exe
PID 1632 wrote to memory of 1620	1632	IMG_9501.EXE	cmd.exe
PID 1632 wrote to memory of 1620	1632	IMG_9501.EXE	cmd.exe
PID 1632 wrote to memory of 1620	1632	IMG_9501.EXE	cmd.exe
PID 1620 wrote to memory of 1744	1620	cmd.exe	reg.exe
PID 1620 wrote to memory of 1744	1620	cmd.exe	reg.exe
PID 1620 wrote to memory of 1744	1620	cmd.exe	reg.exe
PID 1620 wrote to memory of 1744	1620	cmd.exe	reg.exe
PID 1632 wrote to memory of 332	1632	IMG_9501.EXE	nsou.exe
PID 1632 wrote to memory of 332	1632	IMG_9501.EXE	nsou.exe
PID 1632 wrote to memory of 332	1632	IMG_9501.EXE	nsou.exe
PID 1632 wrote to memory of 332	1632	IMG_9501.EXE	nsou.exe
PID 332 wrote to memory of 524	332	nsou.exe	InstallUtil.exe
PID 332 wrote to memory of 524	332	nsou.exe	InstallUtil.exe
PID 332 wrote to memory of 524	332	nsou.exe	InstallUtil.exe
PID 332 wrote to memory of 524	332	nsou.exe	InstallUtil.exe
PID 332 wrote to memory of 524	332	nsou.exe	InstallUtil.exe
PID 332 wrote to memory of 524	332	nsou.exe	InstallUtil.exe
PID 332 wrote to memory of 524	332	nsou.exe	InstallUtil.exe
PID 332 wrote to memory of 524	332	nsou.exe	InstallUtil.exe
PID 332 wrote to memory of 524	332	nsou.exe	InstallUtil.exe
PID 332 wrote to memory of 524	332	nsou.exe	InstallUtil.exe
PID 332 wrote to memory of 524	332	nsou.exe	InstallUtil.exe
PID 332 wrote to memory of 524	332	nsou.exe	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\IMG_9501.EXE
"C:\Users\Admin\AppData\Local\Temp\IMG_9501.EXE"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1632

C:\Windows\SysWOW64\cmd.exe
"cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "naets" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\nsou.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:1620

C:\Windows\SysWOW64\reg.exe
REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "naets" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\nsou.exe"
3⤵
- Adds Run key to start application
PID:1744

C:\Users\Admin\AppData\Roaming\nsou.exe
"C:\Users\Admin\AppData\Roaming\nsou.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:332

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:524

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

2

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

2

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\AppData\Roaming\nsou.exe
MD5
e3d9793d14ec64e2398c709a3483c212

SHA1
6a86e4ecd6529345e29fb461b59787a7560f4865

SHA256
14dc0be4a9f52bb8c9614621b4d521ed56592dcde2483b6ff099d061bcb7cada

SHA512
f3c0a8818fcc5bb09bd76fad45d49bb7af155e5c77bb58aac66323efb71c0a4853813c3ef964694e1b8df3e325a0602ec683f478a575616947a7624b8406128f

Download Submit
C:\Users\Admin\AppData\Roaming\nsou.exe
MD5
e3d9793d14ec64e2398c709a3483c212

SHA1
6a86e4ecd6529345e29fb461b59787a7560f4865

SHA256
14dc0be4a9f52bb8c9614621b4d521ed56592dcde2483b6ff099d061bcb7cada

SHA512
f3c0a8818fcc5bb09bd76fad45d49bb7af155e5c77bb58aac66323efb71c0a4853813c3ef964694e1b8df3e325a0602ec683f478a575616947a7624b8406128f

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

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
\Users\Admin\AppData\Roaming\nsou.exe
MD5
e3d9793d14ec64e2398c709a3483c212

SHA1
6a86e4ecd6529345e29fb461b59787a7560f4865

SHA256
14dc0be4a9f52bb8c9614621b4d521ed56592dcde2483b6ff099d061bcb7cada

SHA512
f3c0a8818fcc5bb09bd76fad45d49bb7af155e5c77bb58aac66323efb71c0a4853813c3ef964694e1b8df3e325a0602ec683f478a575616947a7624b8406128f

Download Submit
memory/332-15-0x00000000745C0000-0x0000000074CAE000-memory.dmp

Filesize
6.9MB

Download
memory/332-25-0x0000000004761000-0x0000000004762000-memory.dmp

Filesize
4KB

Download
memory/332-22-0x00000000005E0000-0x00000000005E1000-memory.dmp

Filesize
4KB

Download
memory/332-12-0x0000000000000000-mapping.dmp

Download
memory/332-21-0x0000000000690000-0x000000000069B000-memory.dmp

Filesize
44KB

Download
memory/332-20-0x0000000004760000-0x0000000004761000-memory.dmp

Filesize
4KB

Download
memory/332-16-0x0000000000E50000-0x0000000000E51000-memory.dmp

Filesize
4KB

Download
memory/524-26-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/524-32-0x0000000004B00000-0x0000000004B01000-memory.dmp

Filesize
4KB

Download
memory/524-30-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/524-29-0x00000000745C0000-0x0000000074CAE000-memory.dmp

Filesize
6.9MB

Download
memory/524-27-0x000000000046364E-mapping.dmp

Download
memory/1620-8-0x0000000000000000-mapping.dmp

Download
memory/1632-3-0x0000000000F50000-0x0000000000F51000-memory.dmp

Filesize
4KB

Download
memory/1632-10-0x0000000000E01000-0x0000000000E02000-memory.dmp

Filesize
4KB

Download
memory/1632-5-0x0000000000360000-0x000000000037E000-memory.dmp

Filesize
120KB

Download
memory/1632-2-0x00000000745C0000-0x0000000074CAE000-memory.dmp

Filesize
6.9MB

Download
memory/1632-6-0x0000000000250000-0x0000000000251000-memory.dmp

Filesize
4KB

Download
memory/1632-7-0x0000000000E00000-0x0000000000E01000-memory.dmp

Filesize
4KB

Download
memory/1744-9-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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