onlylogger | 539efe24846cc5cd476d50b6690d508743e62b0358bf9aa74fa4dda455bf3f4d

Analysis

max time kernel
28s
max time network
47s
platform
windows7_x64
resource
win7-20220718-en
resource tags

arch:x64arch:x86image:win7-20220718-enlocale:en-usos:windows7-x64system
submitted
27-07-2022 00:50

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General

Target

539efe24846cc5cd476d50b6690d508743e62b0358bf9aa74fa4dda455bf3f4d.exe
Size

434KB
MD5

e60a53fdbb9c3b317fa294b1f2a5b632
SHA1

587c6f730e6ab168e6d697e4bd02b44df65f4205
SHA256

539efe24846cc5cd476d50b6690d508743e62b0358bf9aa74fa4dda455bf3f4d
SHA512

998c91693fed0519b571607c59135a655dd6f2eae6c3ffe0ff05680d33324227121fd9f8c6ecc717e2aa95d34687d17d55f360ad5a280c32d9003a5776ebf09d

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/1696-58-0x00000000002D0000-0x0000000000319000-memory.dmp	family_onlylogger
behavioral1/memory/1696-60-0x0000000000400000-0x000000000103D000-memory.dmp	family_onlylogger

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1680 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

2008 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 2008 taskkill.exe

pid	process
1680	cmd.exe

pid	process
2008	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	2008	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

539efe24846cc5cd476d50b6690d508743e62b0358bf9aa74fa4dda455bf3f4d.execmd.exe

description	pid	process	target process
PID 1696 wrote to memory of 1680	1696	539efe24846cc5cd476d50b6690d508743e62b0358bf9aa74fa4dda455bf3f4d.exe	cmd.exe
PID 1696 wrote to memory of 1680	1696	539efe24846cc5cd476d50b6690d508743e62b0358bf9aa74fa4dda455bf3f4d.exe	cmd.exe
PID 1696 wrote to memory of 1680	1696	539efe24846cc5cd476d50b6690d508743e62b0358bf9aa74fa4dda455bf3f4d.exe	cmd.exe
PID 1696 wrote to memory of 1680	1696	539efe24846cc5cd476d50b6690d508743e62b0358bf9aa74fa4dda455bf3f4d.exe	cmd.exe
PID 1680 wrote to memory of 2008	1680	cmd.exe	taskkill.exe
PID 1680 wrote to memory of 2008	1680	cmd.exe	taskkill.exe
PID 1680 wrote to memory of 2008	1680	cmd.exe	taskkill.exe
PID 1680 wrote to memory of 2008	1680	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\539efe24846cc5cd476d50b6690d508743e62b0358bf9aa74fa4dda455bf3f4d.exe
"C:\Users\Admin\AppData\Local\Temp\539efe24846cc5cd476d50b6690d508743e62b0358bf9aa74fa4dda455bf3f4d.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1696

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /im "539efe24846cc5cd476d50b6690d508743e62b0358bf9aa74fa4dda455bf3f4d.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\539efe24846cc5cd476d50b6690d508743e62b0358bf9aa74fa4dda455bf3f4d.exe" & exit
2⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
PID:1680

C:\Windows\SysWOW64\taskkill.exe
taskkill /im "539efe24846cc5cd476d50b6690d508743e62b0358bf9aa74fa4dda455bf3f4d.exe" /f
3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2008

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/1680-56-0x0000000000000000-mapping.dmp

Download
memory/1696-54-0x00000000010F8000-0x0000000001121000-memory.dmp

Filesize
164KB

Download
memory/1696-55-0x0000000075871000-0x0000000075873000-memory.dmp

Filesize
8KB

Download
memory/1696-57-0x00000000010F8000-0x0000000001121000-memory.dmp

Filesize
164KB

Download
memory/1696-58-0x00000000002D0000-0x0000000000319000-memory.dmp

Filesize
292KB

Download
memory/1696-60-0x0000000000400000-0x000000000103D000-memory.dmp

Filesize
12.2MB

Download
memory/2008-59-0x0000000000000000-mapping.dmp

Download