4abd3cd8adba74f2452a767d30b33f84e5caf144d86b1df972d640668f37993a

Analysis

max time kernel
150s
max time network
152s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
04/06/2024, 21:53

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General

Target

2024-06-04_fcfaf6743126f37a04d25ca4b2f8d16c_cryptolocker.exe
Size

39KB
MD5

fcfaf6743126f37a04d25ca4b2f8d16c
SHA1

d1941a165fd1f59c1ed8d99cd8387ac8fa91e1bc
SHA256

4abd3cd8adba74f2452a767d30b33f84e5caf144d86b1df972d640668f37993a
SHA512

e79e7c19f22619c1728678993b326aff9a236e24af126c5fa663e5c2d4e0495e647d604a304e05f9fe008f2598229558b4d8ccef7e9996596da8887ade301d7d
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGp/YIm7wm0WZy6:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xw

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000014323-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000014323-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
3048	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
844	2024-06-04_fcfaf6743126f37a04d25ca4b2f8d16c_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
844	2024-06-04_fcfaf6743126f37a04d25ca4b2f8d16c_cryptolocker.exe
3048	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 844 wrote to memory of 3048	844	2024-06-04_fcfaf6743126f37a04d25ca4b2f8d16c_cryptolocker.exe	28
PID 844 wrote to memory of 3048	844	2024-06-04_fcfaf6743126f37a04d25ca4b2f8d16c_cryptolocker.exe	28
PID 844 wrote to memory of 3048	844	2024-06-04_fcfaf6743126f37a04d25ca4b2f8d16c_cryptolocker.exe	28
PID 844 wrote to memory of 3048	844	2024-06-04_fcfaf6743126f37a04d25ca4b2f8d16c_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-04_fcfaf6743126f37a04d25ca4b2f8d16c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-04_fcfaf6743126f37a04d25ca4b2f8d16c_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:844
- 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:3048

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
39KB

MD5
c216f00d44095e019b6d8a63c2d6ce53

SHA1
3a5745f6fae9a9b4eecca98b3a810db619b0ea08

SHA256
29a39a18602e5eac97a8dfb1c9ba76256c3e35f2709971cd46dae0b51c9d314c

SHA512
dfef0c7cc411c39b1cd01dcb1b9a24e43b37fd1b9a546bfa06bb6b1ed057947e298d80de799f13650fc9b6168347a73be7d19a0402a2d217370afe63b6331927

Download Submit
memory/844-0-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/844-8-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/844-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3048-23-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download