4b9363ffd1ad7ad620d1c5ae490157bc5fa4a9bccef29205e97d2b74a156143e

Analysis

max time kernel
149s
max time network
154s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
27/03/2024, 10:36

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General

Target

2024-03-27_78cf1feee36e4361d2819666b0a75884_cryptolocker.exe
Size

32KB
MD5

78cf1feee36e4361d2819666b0a75884
SHA1

bf432c208d13a749605ae20d36ec6d23ed66d86d
SHA256

4b9363ffd1ad7ad620d1c5ae490157bc5fa4a9bccef29205e97d2b74a156143e
SHA512

9e582085052084f913a9f2da1fdd114a247bfe823c4b935f83fe97db770ae370d4a0c3316f9db9f461881b4f4544f68e34f4fad248efcfadc179bf6e7178ddad
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9/Bbl:b7o/2n1TCraU6GD1a4Xt9H

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b00000001224c-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
1724	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
1196	2024-03-27_78cf1feee36e4361d2819666b0a75884_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
1196	2024-03-27_78cf1feee36e4361d2819666b0a75884_cryptolocker.exe
1724	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1196 wrote to memory of 1724	1196	2024-03-27_78cf1feee36e4361d2819666b0a75884_cryptolocker.exe	28
PID 1196 wrote to memory of 1724	1196	2024-03-27_78cf1feee36e4361d2819666b0a75884_cryptolocker.exe	28
PID 1196 wrote to memory of 1724	1196	2024-03-27_78cf1feee36e4361d2819666b0a75884_cryptolocker.exe	28
PID 1196 wrote to memory of 1724	1196	2024-03-27_78cf1feee36e4361d2819666b0a75884_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-27_78cf1feee36e4361d2819666b0a75884_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-27_78cf1feee36e4361d2819666b0a75884_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1196
- 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:1724

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
32KB

MD5
acb3ab96612029bd9363d9ac569747f5

SHA1
fd7ecd25e2704da2bdec18cf3f90eada368ab409

SHA256
92deecd76c92e8ea83bb955a53276bd6c07c21812a2a4cfef6dd419b273a2e72

SHA512
e8da3187394c2a70e3d947cde2d23ce9257d244f536cfad23b9eed21aff7fc838b8537012f411a5597e4fdd7fe94b25d6134c64d9e425a064afe12721426c05e

Download Submit
memory/1196-0-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download
memory/1196-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1196-8-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download
memory/1724-16-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download