snakekeylogger | f4524797f4b1871ce21a139c2eabcd661e3a1c8728a7b40d54d3a8c0ee6ca30a

General

Target

IMG_53091.pdf.exe
Size

1.5MB
MD5

21781179e4ac1c7fcf92ff2ca32d22d4
SHA1

4aea4efe9b1fd66c4e107bbc691626ef662b2b42
SHA256

f4524797f4b1871ce21a139c2eabcd661e3a1c8728a7b40d54d3a8c0ee6ca30a
SHA512

fa7ce44f9b16e4b425a5e7d93705be553dbe0c71e6e429273966059322b7f57a91d47305bd7ad92c08917226f8f71c707fb6a5fdff79b29422f2f24c4e8a3a73

Score

10^/10

snakekeylogger keylogger persistence 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/4408-28-0x000000000046370E-mapping.dmp	family_snakekeylogger
behavioral2/memory/4408-32-0x0000000000700000-0x0000000000768000-memory.dmp	family_snakekeylogger

Executes dropped EXE 2 IoCs

Processes:

jra.exeInstallUtil.exe

pid process

4084 jra.exe
4408 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
4084	jra.exe
4408	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-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\fxyt = "C:\\Users\\Admin\\jra.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

14 checkip.dyndns.org
17 freegeoip.app
18 freegeoip.app
Suspicious use of SetThreadContext 1 IoCs

Processes:

jra.exe

description pid process target process

PID 4084 set thread context of 4408 4084 jra.exe InstallUtil.exe

flow	ioc
14	checkip.dyndns.org
17	freegeoip.app
18	freegeoip.app

description	pid	process	target process
PID 4084 set thread context of 4408	4084	jra.exe	InstallUtil.exe

Suspicious behavior: EnumeratesProcesses 26 IoCs

Processes:

IMG_53091.pdf.exejra.exeInstallUtil.exe

pid	process
4716	IMG_53091.pdf.exe
4716	IMG_53091.pdf.exe
4716	IMG_53091.pdf.exe
4716	IMG_53091.pdf.exe
4716	IMG_53091.pdf.exe
4716	IMG_53091.pdf.exe
4716	IMG_53091.pdf.exe
4716	IMG_53091.pdf.exe
4716	IMG_53091.pdf.exe
4716	IMG_53091.pdf.exe
4716	IMG_53091.pdf.exe
4716	IMG_53091.pdf.exe
4716	IMG_53091.pdf.exe
4716	IMG_53091.pdf.exe
4716	IMG_53091.pdf.exe
4716	IMG_53091.pdf.exe
4716	IMG_53091.pdf.exe
4084	jra.exe
4084	jra.exe
4408	InstallUtil.exe
4408	InstallUtil.exe
4408	InstallUtil.exe
4408	InstallUtil.exe
4408	InstallUtil.exe
4408	InstallUtil.exe
4408	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

IMG_53091.pdf.exejra.exeInstallUtil.exe

description pid process

Token: SeDebugPrivilege 4716 IMG_53091.pdf.exe
Token: SeDebugPrivilege 4084 jra.exe
Token: SeDebugPrivilege 4408 InstallUtil.exe

description	pid	process
Token: SeDebugPrivilege	4716	IMG_53091.pdf.exe
Token: SeDebugPrivilege	4084	jra.exe
Token: SeDebugPrivilege	4408	InstallUtil.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

IMG_53091.pdf.execmd.exejra.exe

description	pid	process	target process
PID 4716 wrote to memory of 3200	4716	IMG_53091.pdf.exe	cmd.exe
PID 4716 wrote to memory of 3200	4716	IMG_53091.pdf.exe	cmd.exe
PID 4716 wrote to memory of 3200	4716	IMG_53091.pdf.exe	cmd.exe
PID 3200 wrote to memory of 3992	3200	cmd.exe	reg.exe
PID 3200 wrote to memory of 3992	3200	cmd.exe	reg.exe
PID 3200 wrote to memory of 3992	3200	cmd.exe	reg.exe
PID 4716 wrote to memory of 4084	4716	IMG_53091.pdf.exe	jra.exe
PID 4716 wrote to memory of 4084	4716	IMG_53091.pdf.exe	jra.exe
PID 4716 wrote to memory of 4084	4716	IMG_53091.pdf.exe	jra.exe
PID 4084 wrote to memory of 4408	4084	jra.exe	InstallUtil.exe
PID 4084 wrote to memory of 4408	4084	jra.exe	InstallUtil.exe
PID 4084 wrote to memory of 4408	4084	jra.exe	InstallUtil.exe
PID 4084 wrote to memory of 4408	4084	jra.exe	InstallUtil.exe
PID 4084 wrote to memory of 4408	4084	jra.exe	InstallUtil.exe
PID 4084 wrote to memory of 4408	4084	jra.exe	InstallUtil.exe
PID 4084 wrote to memory of 4408	4084	jra.exe	InstallUtil.exe
PID 4084 wrote to memory of 4408	4084	jra.exe	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\IMG_53091.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\IMG_53091.pdf.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4716

C:\Windows\SysWOW64\cmd.exe
"cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "fxyt" /t REG_SZ /d "C:\Users\Admin\jra.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:3200

C:\Windows\SysWOW64\reg.exe
REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "fxyt" /t REG_SZ /d "C:\Users\Admin\jra.exe"
3⤵
- Adds Run key to start application
PID:3992

C:\Users\Admin\jra.exe
"C:\Users\Admin\jra.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4084

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:4408

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

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\jra.exe
MD5
21781179e4ac1c7fcf92ff2ca32d22d4

SHA1
4aea4efe9b1fd66c4e107bbc691626ef662b2b42

SHA256
f4524797f4b1871ce21a139c2eabcd661e3a1c8728a7b40d54d3a8c0ee6ca30a

SHA512
fa7ce44f9b16e4b425a5e7d93705be553dbe0c71e6e429273966059322b7f57a91d47305bd7ad92c08917226f8f71c707fb6a5fdff79b29422f2f24c4e8a3a73

Download Submit
C:\Users\Admin\jra.exe
MD5
21781179e4ac1c7fcf92ff2ca32d22d4

SHA1
4aea4efe9b1fd66c4e107bbc691626ef662b2b42

SHA256
f4524797f4b1871ce21a139c2eabcd661e3a1c8728a7b40d54d3a8c0ee6ca30a

SHA512
fa7ce44f9b16e4b425a5e7d93705be553dbe0c71e6e429273966059322b7f57a91d47305bd7ad92c08917226f8f71c707fb6a5fdff79b29422f2f24c4e8a3a73

Download Submit
memory/3200-10-0x0000000000000000-mapping.dmp

Download
memory/3992-11-0x0000000000000000-mapping.dmp

Download
memory/4084-16-0x0000000073530000-0x0000000073C1E000-memory.dmp

Filesize
6.9MB

Download
memory/4084-26-0x0000000005881000-0x0000000005882000-memory.dmp

Filesize
4KB

Download
memory/4084-25-0x0000000005140000-0x0000000005141000-memory.dmp

Filesize
4KB

Download
memory/4084-24-0x0000000008D40000-0x0000000008D4B000-memory.dmp

Filesize
44KB

Download
memory/4084-13-0x0000000000000000-mapping.dmp

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memory/4084-23-0x0000000005880000-0x0000000005881000-memory.dmp

Filesize
4KB

Download
memory/4408-28-0x000000000046370E-mapping.dmp

Download
memory/4408-31-0x0000000073530000-0x0000000073C1E000-memory.dmp

Filesize
6.9MB

Download
memory/4408-39-0x00000000060A0000-0x00000000060A1000-memory.dmp

Filesize
4KB

Download
memory/4408-37-0x0000000005E10000-0x0000000005E11000-memory.dmp

Filesize
4KB

Download
memory/4408-36-0x0000000004CA0000-0x0000000004CA1000-memory.dmp

Filesize
4KB

Download
memory/4408-34-0x0000000005140000-0x0000000005141000-memory.dmp

Filesize
4KB

Download
memory/4408-32-0x0000000000700000-0x0000000000768000-memory.dmp

Filesize
416KB

Download
memory/4716-9-0x0000000007BC0000-0x0000000007BC1000-memory.dmp

Filesize
4KB

Download
memory/4716-3-0x0000000000880000-0x0000000000881000-memory.dmp

Filesize
4KB

Download
memory/4716-7-0x0000000005430000-0x0000000005431000-memory.dmp

Filesize
4KB

Download
memory/4716-5-0x0000000002F00000-0x0000000002F01000-memory.dmp

Filesize
4KB

Download
memory/4716-8-0x0000000002DD0000-0x0000000002DD1000-memory.dmp

Filesize
4KB

Download
memory/4716-2-0x0000000073530000-0x0000000073C1E000-memory.dmp

Filesize
6.9MB

Download
memory/4716-12-0x0000000005431000-0x0000000005432000-memory.dmp

Filesize
4KB

Download
memory/4716-6-0x0000000002D70000-0x0000000002D8E000-memory.dmp

Filesize
120KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads