ba89827a062c91b4977521ea84c8a28e2dd589d70ae4af45900ba39086b3e760

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
06/03/2024, 18:08

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General

Target

2024-03-06_faf61bd6a4b7b4559e645ca1e9038d8e_cryptolocker.exe
Size

43KB
MD5

faf61bd6a4b7b4559e645ca1e9038d8e
SHA1

3c7a1f0028345f49395206dd657216bb0be40c03
SHA256

ba89827a062c91b4977521ea84c8a28e2dd589d70ae4af45900ba39086b3e760
SHA512

ef56bd22a065a096e85177ee8cee1da544672b5c74427f17a81ce7f2d668e554c3e5530dc112ee3da87e3bd1623840c8ef7ecca2847f834e9e5b5abf5beeb3fc
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3KxW:o1KhxqwtdgI2MyzNORQtOflIwoHNV2X7

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c0000000122de-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000c0000000122de-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2292	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2872	2024-03-06_faf61bd6a4b7b4559e645ca1e9038d8e_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
2872	2024-03-06_faf61bd6a4b7b4559e645ca1e9038d8e_cryptolocker.exe
2292	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2872 wrote to memory of 2292	2872	2024-03-06_faf61bd6a4b7b4559e645ca1e9038d8e_cryptolocker.exe	28
PID 2872 wrote to memory of 2292	2872	2024-03-06_faf61bd6a4b7b4559e645ca1e9038d8e_cryptolocker.exe	28
PID 2872 wrote to memory of 2292	2872	2024-03-06_faf61bd6a4b7b4559e645ca1e9038d8e_cryptolocker.exe	28
PID 2872 wrote to memory of 2292	2872	2024-03-06_faf61bd6a4b7b4559e645ca1e9038d8e_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-06_faf61bd6a4b7b4559e645ca1e9038d8e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-06_faf61bd6a4b7b4559e645ca1e9038d8e_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2872
- 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:2292

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
0bc47d405a7a39d29d0572a46d2dcd22

SHA1
f8249cf8730f69f0f4859b36cff336166f711098

SHA256
28f094f6eda487ad36cfac337723cff2d8967a7e8160a4430df100bbcccdb7cf

SHA512
a4a9c9f8a20fff2ff5675b5d666571ff5b99b54dcaf228d5b37a3d3766abd44e35be572202efbe16dd0b1c779f68a81a3febb840a8427b0b5e572c37c74bdfd5

Download Submit
memory/2292-16-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2872-0-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2872-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2872-8-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download