f636cb620aa90239a2fd6c7e982a1736c837da478a35bda426d4f6f4e275f9ec

Analysis

max time kernel
150s
max time network
151s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
22-05-2024 21:26

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General

Target

2024-05-22_103c2d618f774180d0bb3a7c65eb3464_cryptolocker.exe
Size

96KB
MD5

103c2d618f774180d0bb3a7c65eb3464
SHA1

9eda5398956e07fb9adc98683b6ef7965f7cdbb2
SHA256

f636cb620aa90239a2fd6c7e982a1736c837da478a35bda426d4f6f4e275f9ec
SHA512

dee6b7026e21433f95183dd5f57d5ac4c5748246487becf49d0320903bc82d2cc887bdac94a6bd6e17dbb59a961cfb621ccfd082d061dcf37ca1281e899b8f2c
SSDEEP

768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRXrZSUfFKazNclMjNUvAc8:xj+VGMOtEvwDpjubwQEI8UtzNcO8Ac8

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2460-8-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_rule2
behavioral1/memory/2460-13-0x0000000002A80000-0x0000000002A90000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2916-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2460-8-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_set1
behavioral1/memory/2460-13-0x0000000002A80000-0x0000000002A90000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2916-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2460-8-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
\Users\Admin\AppData\Local\Temp\misid.exe	INDICATOR_EXE_Packed_MPress
behavioral1/memory/2460-13-0x0000000002A80000-0x0000000002A90000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/memory/2916-25-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress

Executes dropped EXE 1 IoCs

Processes:

misid.exe

pid process

2916 misid.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-22_103c2d618f774180d0bb3a7c65eb3464_cryptolocker.exe

pid process

2460 2024-05-22_103c2d618f774180d0bb3a7c65eb3464_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2916	misid.exe

pid	process
2460	2024-05-22_103c2d618f774180d0bb3a7c65eb3464_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-22_103c2d618f774180d0bb3a7c65eb3464_cryptolocker.exe

description	pid	process	target process
PID 2460 wrote to memory of 2916	2460	2024-05-22_103c2d618f774180d0bb3a7c65eb3464_cryptolocker.exe	misid.exe
PID 2460 wrote to memory of 2916	2460	2024-05-22_103c2d618f774180d0bb3a7c65eb3464_cryptolocker.exe	misid.exe
PID 2460 wrote to memory of 2916	2460	2024-05-22_103c2d618f774180d0bb3a7c65eb3464_cryptolocker.exe	misid.exe
PID 2460 wrote to memory of 2916	2460	2024-05-22_103c2d618f774180d0bb3a7c65eb3464_cryptolocker.exe	misid.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_103c2d618f774180d0bb3a7c65eb3464_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_103c2d618f774180d0bb3a7c65eb3464_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2460
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2916

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\misid.exe

Filesize
96KB

MD5
d4167fcd8f4a648fc36bcd16f11c3435

SHA1
1cbe935bb3f850f80a9dc1f8511353765dc67e09

SHA256
f61f94d9f5b8274b3b1c67530a8014363ff5bee3c033053e076d6c902b341b82

SHA512
f772a336a62949fde2d461f1dfff80bf80c4f1159a43423b2710bef18fe8e820f454ce096a91bd9d34a7a8a21fa919f19617c811ebccbf7c53b768e26e691c18

Download Submit
memory/2460-1-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/2460-0-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/2460-9-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/2460-8-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2460-13-0x0000000002A80000-0x0000000002A90000-memory.dmp

Filesize
64KB

Download
memory/2916-17-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2916-24-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2916-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download