onlylogger | 55d7d5a4addb1a4bc1af28941928a8e42070dca6577bf6e13ee6dcf75cb93e6b

Analysis

max time kernel
36s
max time network
44s
platform
windows7_x64
resource
win7-20220715-en
resource tags

arch:x64arch:x86image:win7-20220715-enlocale:en-usos:windows7-x64system
submitted
25-07-2022 14:49

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General

Target

55d7d5a4addb1a4bc1af28941928a8e42070dca6577bf6e13ee6dcf75cb93e6b.exe
Size

434KB
MD5

3ee62ae7b37bfdbc36a3a40beb84b3cf
SHA1

f22015edba4903eb3883bd482436674a09e3bc79
SHA256

55d7d5a4addb1a4bc1af28941928a8e42070dca6577bf6e13ee6dcf75cb93e6b
SHA512

8260f37bd885f264b43f5668f8f0bb6511abe1eebffcac3bf06de661f252ee4320c785ee6a7964944e4aa211f70ebf11194b942f53570f4fa06c3576e110a96c

Score

10^/10

onlylogger loader

Malware Config

Signatures

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

OnlyLogger payload 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/944-57-0x00000000002D0000-0x0000000000319000-memory.dmp	family_onlylogger
behavioral1/memory/944-58-0x0000000000400000-0x000000000103D000-memory.dmp	family_onlylogger
behavioral1/memory/944-61-0x0000000000400000-0x000000000103D000-memory.dmp	family_onlylogger

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1932 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

1344 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 1344 taskkill.exe

pid	process
1932	cmd.exe

pid	process
1344	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	1344	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

55d7d5a4addb1a4bc1af28941928a8e42070dca6577bf6e13ee6dcf75cb93e6b.execmd.exe

description	pid	process	target process
PID 944 wrote to memory of 1932	944	55d7d5a4addb1a4bc1af28941928a8e42070dca6577bf6e13ee6dcf75cb93e6b.exe	cmd.exe
PID 944 wrote to memory of 1932	944	55d7d5a4addb1a4bc1af28941928a8e42070dca6577bf6e13ee6dcf75cb93e6b.exe	cmd.exe
PID 944 wrote to memory of 1932	944	55d7d5a4addb1a4bc1af28941928a8e42070dca6577bf6e13ee6dcf75cb93e6b.exe	cmd.exe
PID 944 wrote to memory of 1932	944	55d7d5a4addb1a4bc1af28941928a8e42070dca6577bf6e13ee6dcf75cb93e6b.exe	cmd.exe
PID 1932 wrote to memory of 1344	1932	cmd.exe	taskkill.exe
PID 1932 wrote to memory of 1344	1932	cmd.exe	taskkill.exe
PID 1932 wrote to memory of 1344	1932	cmd.exe	taskkill.exe
PID 1932 wrote to memory of 1344	1932	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\55d7d5a4addb1a4bc1af28941928a8e42070dca6577bf6e13ee6dcf75cb93e6b.exe
"C:\Users\Admin\AppData\Local\Temp\55d7d5a4addb1a4bc1af28941928a8e42070dca6577bf6e13ee6dcf75cb93e6b.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:944

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /im "55d7d5a4addb1a4bc1af28941928a8e42070dca6577bf6e13ee6dcf75cb93e6b.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\55d7d5a4addb1a4bc1af28941928a8e42070dca6577bf6e13ee6dcf75cb93e6b.exe" & exit
2⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
PID:1932

C:\Windows\SysWOW64\taskkill.exe
taskkill /im "55d7d5a4addb1a4bc1af28941928a8e42070dca6577bf6e13ee6dcf75cb93e6b.exe" /f
3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1344

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/944-54-0x00000000010F8000-0x0000000001122000-memory.dmp

Filesize
168KB

Download
memory/944-55-0x0000000075241000-0x0000000075243000-memory.dmp

Filesize
8KB

Download
memory/944-56-0x00000000010F8000-0x0000000001122000-memory.dmp

Filesize
168KB

Download
memory/944-57-0x00000000002D0000-0x0000000000319000-memory.dmp

Filesize
292KB

Download
memory/944-58-0x0000000000400000-0x000000000103D000-memory.dmp

Filesize
12.2MB

Download
memory/944-60-0x00000000010F8000-0x0000000001122000-memory.dmp

Filesize
168KB

Download
memory/944-61-0x0000000000400000-0x000000000103D000-memory.dmp

Filesize
12.2MB

Download
memory/1344-62-0x0000000000000000-mapping.dmp

Download
memory/1932-59-0x0000000000000000-mapping.dmp

Download