fa6f76ad270e58ebace1c79e50c8c83e1e5e17a705e562caf60d0af4ebf8634e

Analysis

max time kernel
135s
max time network
146s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
21-02-2024 16:50

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General

Target

2024-02-21_72c5b44a7f0a9fbb223b596c82f228d1_cryptolocker.exe
Size

42KB
MD5

72c5b44a7f0a9fbb223b596c82f228d1
SHA1

435a22600bfd945f8aadf25354ba7d3c945b64cd
SHA256

fa6f76ad270e58ebace1c79e50c8c83e1e5e17a705e562caf60d0af4ebf8634e
SHA512

00bc6f9156ada3ac2ffa8d46e88f46fdeb197a60b75c150ab012914d4f7c83aa1f61b6d87442d10bdf68009629f54735921c97a58340f281933eaf5030af1164
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMRqrwGF:bc/y2lkF0+BjrdF

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000900000001223d-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2152	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
1232	2024-02-21_72c5b44a7f0a9fbb223b596c82f228d1_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
1232	2024-02-21_72c5b44a7f0a9fbb223b596c82f228d1_cryptolocker.exe
2152	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1232 wrote to memory of 2152	1232	2024-02-21_72c5b44a7f0a9fbb223b596c82f228d1_cryptolocker.exe	28
PID 1232 wrote to memory of 2152	1232	2024-02-21_72c5b44a7f0a9fbb223b596c82f228d1_cryptolocker.exe	28
PID 1232 wrote to memory of 2152	1232	2024-02-21_72c5b44a7f0a9fbb223b596c82f228d1_cryptolocker.exe	28
PID 1232 wrote to memory of 2152	1232	2024-02-21_72c5b44a7f0a9fbb223b596c82f228d1_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-21_72c5b44a7f0a9fbb223b596c82f228d1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-21_72c5b44a7f0a9fbb223b596c82f228d1_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1232
- 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:2152

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
42KB

MD5
df6218c613304ccd621e7adbb82c93e3

SHA1
bf7f4d6da555e9f4f23a7feef61da91ce5b88b17

SHA256
f6479150c25851930010808c893b613b35aa892d9120d79f6867288c2eea8437

SHA512
39cf5d96a4e577fb196ce5b56bf66d09df115cc5389fdcbe19c49c7bd3cd90739049e808fdaef740417f55f11def4f9f633abe206f1d317ccbcb5f4c289a73a9

Download Submit
memory/1232-0-0x0000000001CC0000-0x0000000001CC6000-memory.dmp

Filesize
24KB

Download
memory/1232-1-0x0000000001CC0000-0x0000000001CC6000-memory.dmp

Filesize
24KB

Download
memory/1232-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2152-17-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download