6c1414f55995055f5a8325ef9d61c511953ece3a99df27694b6b38cc682f48c8

Analysis

max time kernel
150s
max time network
151s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
09/04/2024, 12:38

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General

Target

2024-04-09_a5f4d6a7f96584c59b215a478c0aa552_cryptolocker.exe
Size

42KB
MD5

a5f4d6a7f96584c59b215a478c0aa552
SHA1

bef33666c60b5a355858601883550c9fd9f4ce72
SHA256

6c1414f55995055f5a8325ef9d61c511953ece3a99df27694b6b38cc682f48c8
SHA512

f4487370602a674ba0c5fc714b4c100df7ea9780f3b947be37734855648cfc71456ded37c195708de9e2d9e33167fb8fe77611ae319172efc8a84f998f4ebdfe
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3KxG:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XD

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b0000000139e0-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000b0000000139e0-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
852	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
1072	2024-04-09_a5f4d6a7f96584c59b215a478c0aa552_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
1072	2024-04-09_a5f4d6a7f96584c59b215a478c0aa552_cryptolocker.exe
852	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1072 wrote to memory of 852	1072	2024-04-09_a5f4d6a7f96584c59b215a478c0aa552_cryptolocker.exe	28
PID 1072 wrote to memory of 852	1072	2024-04-09_a5f4d6a7f96584c59b215a478c0aa552_cryptolocker.exe	28
PID 1072 wrote to memory of 852	1072	2024-04-09_a5f4d6a7f96584c59b215a478c0aa552_cryptolocker.exe	28
PID 1072 wrote to memory of 852	1072	2024-04-09_a5f4d6a7f96584c59b215a478c0aa552_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-09_a5f4d6a7f96584c59b215a478c0aa552_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-09_a5f4d6a7f96584c59b215a478c0aa552_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1072
- 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:852

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
42KB

MD5
f8afbcb742cd864f661b964e1a2d5c70

SHA1
d43ced7d7c44804b29b500d250f2c237f4ad3c3a

SHA256
c5a986476db4136078fad2bf00483b6265ef35759873a8be1f4f40f00aa57822

SHA512
f0cb188d0c90f864cd4cc623e8e4647d3e9f1a068e903dbae5c8f6190211d762a0ff4f2e401bf309acc2f19ac050b535ec31b2566cdde3045d6441004d9ecc92

Download Submit
memory/852-23-0x00000000003B0000-0x00000000003B6000-memory.dmp

Filesize
24KB

Download
memory/1072-0-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/1072-1-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/1072-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download