onlylogger | d1a299c8b89530ee091ceeb89c172bdd9317816825b68926b0e368714e74d27f

Resubmissions

07-01-2024 18:07

240107-wqg6qabfcl 10

16-01-2022 12:55

220116-p5sgnsfdf9 10

Analysis

max time kernel
118s
max time network
118s
platform
windows7_x64
resource
win7-en-20211208
submitted
16-01-2022 12:55

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General

Target

57620fe23fe46b9b50f5ec40bdc6b8fa.exe
Size

419KB
MD5

57620fe23fe46b9b50f5ec40bdc6b8fa
SHA1

fe38a4e6d66ad1cc621ea39e3d344d1fcd6227d2
SHA256

d1a299c8b89530ee091ceeb89c172bdd9317816825b68926b0e368714e74d27f
SHA512

671cd11456cc62533acfd62693db39488aa8964db4f4b4729ec1305b8b5550798bd1eae4107957eb5bc1b29d6023c8f28b0f33ccaf21a2b7169e5bf49125f1a3

Score

10^/10

onlylogger loader

Malware Config

Signatures

OnlyLogger
A tiny loader that uses IPLogger to get its payload.
loader onlylogger

OnlyLogger Payload 2 IoCs

Processes:

resource	yara_rule
behavioral1/memory/760-56-0x00000000001B0000-0x00000000001FC000-memory.dmp	family_onlylogger
behavioral1/memory/760-57-0x0000000000400000-0x0000000000579000-memory.dmp	family_onlylogger

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1892 cmd.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

772 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 772 taskkill.exe

pid	process
1892	cmd.exe

pid	process
772	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	772	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

57620fe23fe46b9b50f5ec40bdc6b8fa.execmd.exe

description	pid	process	target process
PID 760 wrote to memory of 1892	760	57620fe23fe46b9b50f5ec40bdc6b8fa.exe	cmd.exe
PID 760 wrote to memory of 1892	760	57620fe23fe46b9b50f5ec40bdc6b8fa.exe	cmd.exe
PID 760 wrote to memory of 1892	760	57620fe23fe46b9b50f5ec40bdc6b8fa.exe	cmd.exe
PID 760 wrote to memory of 1892	760	57620fe23fe46b9b50f5ec40bdc6b8fa.exe	cmd.exe
PID 1892 wrote to memory of 772	1892	cmd.exe	taskkill.exe
PID 1892 wrote to memory of 772	1892	cmd.exe	taskkill.exe
PID 1892 wrote to memory of 772	1892	cmd.exe	taskkill.exe
PID 1892 wrote to memory of 772	1892	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\57620fe23fe46b9b50f5ec40bdc6b8fa.exe
"C:\Users\Admin\AppData\Local\Temp\57620fe23fe46b9b50f5ec40bdc6b8fa.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:760

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /im "57620fe23fe46b9b50f5ec40bdc6b8fa.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\57620fe23fe46b9b50f5ec40bdc6b8fa.exe" & exit
2⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
PID:1892

C:\Windows\SysWOW64\taskkill.exe
taskkill /im "57620fe23fe46b9b50f5ec40bdc6b8fa.exe" /f
3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:772

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/760-54-0x00000000002EB000-0x0000000000316000-memory.dmp

Filesize
172KB

Download
memory/760-55-0x0000000075D61000-0x0000000075D63000-memory.dmp

Filesize
8KB

Download
memory/760-56-0x00000000001B0000-0x00000000001FC000-memory.dmp

Filesize
304KB

Download
memory/760-57-0x0000000000400000-0x0000000000579000-memory.dmp

Filesize
1.5MB

Download
memory/772-59-0x0000000000000000-mapping.dmp

Download
memory/1892-58-0x0000000000000000-mapping.dmp

Download