cheetahkeylogger | 358f27d29797fdd183f88b02fb2cc8f322a7ccbdb32e927fc14f22004a63b72f

General

Target

Payment confirmation.exe
Size

316KB
MD5

09e1f9b49bb6d33d6b88518c9449fde1
SHA1

accd9fdf8c6166e8e887e3bfc92c4cf3cb91ca46
SHA256

432feb3811e7e4993eedfdea5735d5790ec0dd0a660a4940841969ffee54194c
SHA512

d13a7366975ad9ff8a61eaac76d7bf3318b3966341af91b8a7c75d31909ae98e1a8c9e83553f3ffa43a5c54eae220941c9f1dc64607ea5c5320906d5510789e1

Score

10^/10

cheetahkeylogger collection keylogger spyware stealer

Malware Config

Extracted

Credentials

Protocol: smtp
Host:
mail.aviner.co.za
Port:
587
Username:
[email protected]
Password:
NoLimits@

Signatures

Cheetah Keylogger
Cheetah is a keylogger and info stealer first seen in March 2020.
stealer keylogger cheetahkeylogger

Cheetah Keylogger Payload 1 IoCs

resource	yara_rule
behavioral1/memory/1208-69-0x0000000000390000-0x00000000003C2000-memory.dmp	family_cheetahkeylogger

Executes dropped EXE 1 IoCs

pid	Process
1208	InstallUtil.exe

Loads dropped DLL 1 IoCs

pid	Process
1524	Payment confirmation.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

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 stealer

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 stealer

Data from Local System
T1005

Credentials in Files
T1081

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.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.

flow	ioc
4	ifconfig.me

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1524 set thread context of 1208	1524	Payment confirmation.exe	28

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1524	Payment confirmation.exe
1524	Payment confirmation.exe
1524	Payment confirmation.exe
1208	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1524	Payment confirmation.exe
Token: SeDebugPrivilege	1208	InstallUtil.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1524 wrote to memory of 1208	1524	Payment confirmation.exe	28
PID 1524 wrote to memory of 1208	1524	Payment confirmation.exe	28
PID 1524 wrote to memory of 1208	1524	Payment confirmation.exe	28
PID 1524 wrote to memory of 1208	1524	Payment confirmation.exe	28
PID 1524 wrote to memory of 1208	1524	Payment confirmation.exe	28
PID 1524 wrote to memory of 1208	1524	Payment confirmation.exe	28
PID 1524 wrote to memory of 1208	1524	Payment confirmation.exe	28
PID 1524 wrote to memory of 1208	1524	Payment confirmation.exe	28
PID 1524 wrote to memory of 1208	1524	Payment confirmation.exe	28
PID 1524 wrote to memory of 1208	1524	Payment confirmation.exe	28
PID 1524 wrote to memory of 1208	1524	Payment confirmation.exe	28

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\Payment confirmation.exe
"C:\Users\Admin\AppData\Local\Temp\Payment confirmation.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1524
- C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
  "C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
  2⤵
  - Executes dropped EXE
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:1208

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

3

T1081

Discovery

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe

Filesize
40KB

MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

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

Filesize
40KB

MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
\Users\Admin\AppData\Local\Temp\InstallUtil.exe

Filesize
40KB

MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
memory/1208-61-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1208-58-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1208-60-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1208-57-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1208-65-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1208-67-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1208-69-0x0000000000390000-0x00000000003C2000-memory.dmp

Filesize
200KB

Download
memory/1208-70-0x0000000076851000-0x0000000076853000-memory.dmp

Filesize
8KB

Download
memory/1524-54-0x00000000003F0000-0x0000000000446000-memory.dmp

Filesize
344KB

Download
memory/1524-55-0x00000000001F0000-0x00000000001FA000-memory.dmp

Filesize
40KB

Download

Analysis

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