d139ba078f15c69c93814667c6c105ff1c6c76620b30626f10cd4f2ffca04ff1

Analysis

max time kernel
149s
max time network
154s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
27/01/2024, 17:36

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General

Target

2024-01-27_c81bc7c5cc88ac434bb39b91729dc503_cryptolocker.exe
Size

41KB
MD5

c81bc7c5cc88ac434bb39b91729dc503
SHA1

134d1544688a0a2a22ce37d6727989800cd7ef3e
SHA256

d139ba078f15c69c93814667c6c105ff1c6c76620b30626f10cd4f2ffca04ff1
SHA512

b0084ba07298eb4eefa4aab36ca96fca5ed55fc14040441e066971aedbdf9b3fdff9a5ba25d9535ff6fcd9e15229ae846bd31730b15ba8eebf465b6519e9c3a7
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMRqRQ:bc/y2lkF0+BjS

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000012243-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
3048	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
2276	2024-01-27_c81bc7c5cc88ac434bb39b91729dc503_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
2276	2024-01-27_c81bc7c5cc88ac434bb39b91729dc503_cryptolocker.exe
3048	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2276 wrote to memory of 3048	2276	2024-01-27_c81bc7c5cc88ac434bb39b91729dc503_cryptolocker.exe	28
PID 2276 wrote to memory of 3048	2276	2024-01-27_c81bc7c5cc88ac434bb39b91729dc503_cryptolocker.exe	28
PID 2276 wrote to memory of 3048	2276	2024-01-27_c81bc7c5cc88ac434bb39b91729dc503_cryptolocker.exe	28
PID 2276 wrote to memory of 3048	2276	2024-01-27_c81bc7c5cc88ac434bb39b91729dc503_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-27_c81bc7c5cc88ac434bb39b91729dc503_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-27_c81bc7c5cc88ac434bb39b91729dc503_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2276
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:3048

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\rewok.exe

Filesize
41KB

MD5
a65b7acaa4c36f6ff275ddbca4e94192

SHA1
8a8a96fd05d4a31a29e0ac100242a6ecb05c2d9a

SHA256
efbc023a9ba65c05072c44a900b1997b3b6d75676565c557bee5fc6a78195cbf

SHA512
559b906d180bc6cec71b502ad9d212db35182d841ee26c2f13df404003eeb389b749760fbbff6e246521183d2e94fee79fce5a310e70c40e0e0009c8a9b1a11a

Download Submit
memory/2276-0-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2276-2-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2276-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3048-18-0x00000000003D0000-0x00000000003D6000-memory.dmp

Filesize
24KB

Download