ebfff2f4cae8ac3e0a4ee664ae791ccbc3bc8477da3d66df5fbf936b50b0f599

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
04/05/2024, 21:24

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General

Target

2024-05-04_5f38a5a65108c5fa0cb31ec3e63d3a62_cryptolocker.exe
Size

38KB
MD5

5f38a5a65108c5fa0cb31ec3e63d3a62
SHA1

c1da011353f2ec9ba50814c82e87802074b095b7
SHA256

ebfff2f4cae8ac3e0a4ee664ae791ccbc3bc8477da3d66df5fbf936b50b0f599
SHA512

2f622cfd2cc42c940c49405ec61dc943543c359350e76f1da1453d6d664d78fa7268ad1268ac693f864c6b42691cad85d0254b43235de6b7618a89844493fcde
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunRSyHmYvevsO:btB9g/WItCSsAGjX7e9N0hunRvGIOL

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000015ccd-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
1404	gewos.exe

Loads dropped DLL 1 IoCs

pid	Process
2304	2024-05-04_5f38a5a65108c5fa0cb31ec3e63d3a62_cryptolocker.exe

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

System Information Discovery
T1082

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2304	2024-05-04_5f38a5a65108c5fa0cb31ec3e63d3a62_cryptolocker.exe
1404	gewos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2304 wrote to memory of 1404	2304	2024-05-04_5f38a5a65108c5fa0cb31ec3e63d3a62_cryptolocker.exe	28
PID 2304 wrote to memory of 1404	2304	2024-05-04_5f38a5a65108c5fa0cb31ec3e63d3a62_cryptolocker.exe	28
PID 2304 wrote to memory of 1404	2304	2024-05-04_5f38a5a65108c5fa0cb31ec3e63d3a62_cryptolocker.exe	28
PID 2304 wrote to memory of 1404	2304	2024-05-04_5f38a5a65108c5fa0cb31ec3e63d3a62_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-04_5f38a5a65108c5fa0cb31ec3e63d3a62_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-04_5f38a5a65108c5fa0cb31ec3e63d3a62_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2304
- C:\Users\Admin\AppData\Local\Temp\gewos.exe
  "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:1404

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

\Users\Admin\AppData\Local\Temp\gewos.exe

Filesize
38KB

MD5
4e4260bb056b41122a31d19bd3cf9a40

SHA1
86524e5389611c2b66827c4d0b2c63359bc69859

SHA256
192e040b2a0828b0b96d1684fd477663250ca5cfb2e723832dfba9b7bc8136ba

SHA512
badaf620c5bccfc490c2d91a3eb4d666294e5975fa682f3f1eb91c75bc645702c899137e64d1f330f2ce76c58e49fa9a64afe87339ca1f6038442520b567b764

Download Submit
memory/1404-23-0x00000000003D0000-0x00000000003D6000-memory.dmp

Filesize
24KB

Download
memory/2304-0-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2304-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2304-8-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download