54e4cf68ed25e2aef342a852a4390b4644ade113a080693e0c1307f32c36edea

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
16/04/2024, 03:38

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General

Target

2024-04-16_3d40c8cce978505f6d55d218956def88_cryptolocker.exe
Size

35KB
MD5

3d40c8cce978505f6d55d218956def88
SHA1

b2ea3509a4c7fb74cd490fa6452c5ce10294108f
SHA256

54e4cf68ed25e2aef342a852a4390b4644ade113a080693e0c1307f32c36edea
SHA512

026ae7aa90145a6684df9fb1ee1b404e28826cc80e54965bb2ce93517d52a00de8fdd4ad09c82ed06d29b4ed93c635a77d97f78f3d06f64cfadba866ad54f7ce
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9/B1RU3V6uVd:b7o/2n1TCraU6GD1a4Xt9bRUlV/

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000a00000001224a-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
1996	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
1732	2024-04-16_3d40c8cce978505f6d55d218956def88_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
1732	2024-04-16_3d40c8cce978505f6d55d218956def88_cryptolocker.exe
1996	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1732 wrote to memory of 1996	1732	2024-04-16_3d40c8cce978505f6d55d218956def88_cryptolocker.exe	28
PID 1732 wrote to memory of 1996	1732	2024-04-16_3d40c8cce978505f6d55d218956def88_cryptolocker.exe	28
PID 1732 wrote to memory of 1996	1732	2024-04-16_3d40c8cce978505f6d55d218956def88_cryptolocker.exe	28
PID 1732 wrote to memory of 1996	1732	2024-04-16_3d40c8cce978505f6d55d218956def88_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-16_3d40c8cce978505f6d55d218956def88_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-16_3d40c8cce978505f6d55d218956def88_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1732
- 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:1996

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
35KB

MD5
7e76272a904ef9afd49880b3af5767b6

SHA1
2059b00328cc38601a17de92761566882ff2ef58

SHA256
dfd70b47e479d425cac608cd24d375826e87a50f7dec2fbdd7b67291ebf7b346

SHA512
6c206c62a5f66af73d60b8100acc9bd222cff109d478902189b3b95c28c1e1e1a621843c004d572b6b0c2e3167575972cfc636b50c0ce32066fa8301a8419bc1

Download Submit
memory/1732-0-0x00000000002E0000-0x00000000002E6000-memory.dmp

Filesize
24KB

Download
memory/1732-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1732-8-0x00000000002E0000-0x00000000002E6000-memory.dmp

Filesize
24KB

Download