31e61051f24b6526c987e2576e8746218f95f04d3acb22badf3b5689acd11516

Analysis

max time kernel
205s
max time network
219s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
23-11-2022 09:08

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General

Target

31e61051f24b6526c987e2576e8746218f95f04d3acb22badf3b5689acd11516.exe
Size

36KB
MD5

d4dcb11060466f804540f7c60d99bdcb
SHA1

f1b95812c0efc67f620c9ecd2222ba7bd46bfcf6
SHA256

31e61051f24b6526c987e2576e8746218f95f04d3acb22badf3b5689acd11516
SHA512

b358df3982c96de72ed6e7c2acab0a3fcb1c262a5b4b5827d2ef18362c3139a1050b0dab7923bbc0955910b4bee5ba31c6a8086d7bc1d316262fa4707a1c0efa
SSDEEP

384:4eSDRAshgB4ArN6Cu2TDkjRb9+GtzI4dKzPKiZjmBYpfdt/teDi/m/cflfXhHVvd:45D6sChluO49YGK4ePaYpJ/m/UHVeE

Score

8^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

oiemeu.exe

pid process

1168 oiemeu.exe

pid	process
1168	oiemeu.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral1/memory/1196-55-0x0000000000400000-0x0000000000419000-memory.dmp	upx
C:\Windows\oiemeu.exe	upx
behavioral1/memory/1168-58-0x0000000000400000-0x0000000000419000-memory.dmp	upx
behavioral1/memory/1196-60-0x0000000000400000-0x0000000000419000-memory.dmp	upx
behavioral1/memory/1168-61-0x0000000000400000-0x0000000000419000-memory.dmp	upx

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1348 cmd.exe

pid	process
1348	cmd.exe

Drops file in Windows directory 2 IoCs

Processes:

31e61051f24b6526c987e2576e8746218f95f04d3acb22badf3b5689acd11516.exe

description	ioc	process
File opened for modification	C:\Windows\oiemeu.exe	31e61051f24b6526c987e2576e8746218f95f04d3acb22badf3b5689acd11516.exe
File created	C:\Windows\oiemeu.exe	31e61051f24b6526c987e2576e8746218f95f04d3acb22badf3b5689acd11516.exe

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

System Information Discovery
T1082
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

31e61051f24b6526c987e2576e8746218f95f04d3acb22badf3b5689acd11516.exe

description pid process

Token: SeIncBasePriorityPrivilege 1196 31e61051f24b6526c987e2576e8746218f95f04d3acb22badf3b5689acd11516.exe

description	pid	process
Token: SeIncBasePriorityPrivilege	1196	31e61051f24b6526c987e2576e8746218f95f04d3acb22badf3b5689acd11516.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

31e61051f24b6526c987e2576e8746218f95f04d3acb22badf3b5689acd11516.exeoiemeu.exe

pid	process
1196	31e61051f24b6526c987e2576e8746218f95f04d3acb22badf3b5689acd11516.exe
1196	31e61051f24b6526c987e2576e8746218f95f04d3acb22badf3b5689acd11516.exe
1168	oiemeu.exe
1168	oiemeu.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

31e61051f24b6526c987e2576e8746218f95f04d3acb22badf3b5689acd11516.exe

description	pid	process	target process
PID 1196 wrote to memory of 1348	1196	31e61051f24b6526c987e2576e8746218f95f04d3acb22badf3b5689acd11516.exe	cmd.exe
PID 1196 wrote to memory of 1348	1196	31e61051f24b6526c987e2576e8746218f95f04d3acb22badf3b5689acd11516.exe	cmd.exe
PID 1196 wrote to memory of 1348	1196	31e61051f24b6526c987e2576e8746218f95f04d3acb22badf3b5689acd11516.exe	cmd.exe
PID 1196 wrote to memory of 1348	1196	31e61051f24b6526c987e2576e8746218f95f04d3acb22badf3b5689acd11516.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\31e61051f24b6526c987e2576e8746218f95f04d3acb22badf3b5689acd11516.exe
"C:\Users\Admin\AppData\Local\Temp\31e61051f24b6526c987e2576e8746218f95f04d3acb22badf3b5689acd11516.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1196

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\31E610~1.EXE > nul
2⤵
- Deletes itself
PID:1348

C:\Windows\oiemeu.exe
C:\Windows\oiemeu.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:1168

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\oiemeu.exe

Filesize
36KB

MD5
d4dcb11060466f804540f7c60d99bdcb

SHA1
f1b95812c0efc67f620c9ecd2222ba7bd46bfcf6

SHA256
31e61051f24b6526c987e2576e8746218f95f04d3acb22badf3b5689acd11516

SHA512
b358df3982c96de72ed6e7c2acab0a3fcb1c262a5b4b5827d2ef18362c3139a1050b0dab7923bbc0955910b4bee5ba31c6a8086d7bc1d316262fa4707a1c0efa

Download Submit
memory/1168-58-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/1168-61-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/1196-54-0x00000000754C1000-0x00000000754C3000-memory.dmp

Filesize
8KB

Download
memory/1196-55-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/1196-60-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/1348-59-0x0000000000000000-mapping.dmp

Download