b744de62c2c597005807028be4ce45c565616c2a866c0f315b8213bdcc9a2e2a

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
28/01/2024, 11:34

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General

Target

2024-01-28_a000434209fa698692b456fbdf3340a3_cryptolocker.exe
Size

43KB
MD5

a000434209fa698692b456fbdf3340a3
SHA1

fea4436ff3e282ba5bf72c5e0a8e34b0c998c706
SHA256

b744de62c2c597005807028be4ce45c565616c2a866c0f315b8213bdcc9a2e2a
SHA512

838fd058010be7b4bc8305cf4c05c01eaeec57c3c8b3193c8cdd2f2801c6811ba610e4af2fdc86d327942fae72e4884b233ecf45cbda54b54132e91b70cfca54
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3Kx8:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xt

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b00000001223f-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000b00000001223f-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2840	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2080	2024-01-28_a000434209fa698692b456fbdf3340a3_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
2080	2024-01-28_a000434209fa698692b456fbdf3340a3_cryptolocker.exe
2840	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2080 wrote to memory of 2840	2080	2024-01-28_a000434209fa698692b456fbdf3340a3_cryptolocker.exe	28
PID 2080 wrote to memory of 2840	2080	2024-01-28_a000434209fa698692b456fbdf3340a3_cryptolocker.exe	28
PID 2080 wrote to memory of 2840	2080	2024-01-28_a000434209fa698692b456fbdf3340a3_cryptolocker.exe	28
PID 2080 wrote to memory of 2840	2080	2024-01-28_a000434209fa698692b456fbdf3340a3_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-28_a000434209fa698692b456fbdf3340a3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-28_a000434209fa698692b456fbdf3340a3_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2080
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:2840

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\hurok.exe

Filesize
43KB

MD5
6d4868bbacfb2a14010847c3f7623577

SHA1
173cb5538f2ec4b30415e3d23d43d426eb929f56

SHA256
b22cf308d1a0dc6f870fac0a7acb48cb178ab8f046520e5d803b2902dec2cd37

SHA512
0dd45362cd6981092f788ad4e778005032bdc9e0d1fe4e0dc2404b36239f74660b7d5e9ea17ab8a757ca0a877b1e35afae5a4325516c7bef31d1640496936c61

Download Submit
memory/2080-0-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/2080-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2080-8-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/2840-22-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download