926fd36c1c689eea24dda59808d081a52cfee7576a08b341f858beceaabe8fc0

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 03:40

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General

Target

2024-01-28_de0c2706333d246a32f4b79d90c977df_cryptolocker.exe
Size

43KB
MD5

de0c2706333d246a32f4b79d90c977df
SHA1

8507ed55e4d348a5771e9f97716e767b2d23d1e5
SHA256

926fd36c1c689eea24dda59808d081a52cfee7576a08b341f858beceaabe8fc0
SHA512

13946988177561f078684878b1a16d0c7e28e6d080df84df17b6e9eb41be317a204d97a947915412040931d3f493dec8ba94b1479a2b855974e8b7b2cd9c3f6d
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3KxP:o1KhxqwtdgI2MyzNORQtOflIwoHNV2X6

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000012262-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000012262-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2788	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2992	2024-01-28_de0c2706333d246a32f4b79d90c977df_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
2992	2024-01-28_de0c2706333d246a32f4b79d90c977df_cryptolocker.exe
2788	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2992 wrote to memory of 2788	2992	2024-01-28_de0c2706333d246a32f4b79d90c977df_cryptolocker.exe	28
PID 2992 wrote to memory of 2788	2992	2024-01-28_de0c2706333d246a32f4b79d90c977df_cryptolocker.exe	28
PID 2992 wrote to memory of 2788	2992	2024-01-28_de0c2706333d246a32f4b79d90c977df_cryptolocker.exe	28
PID 2992 wrote to memory of 2788	2992	2024-01-28_de0c2706333d246a32f4b79d90c977df_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-28_de0c2706333d246a32f4b79d90c977df_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-28_de0c2706333d246a32f4b79d90c977df_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2992
- 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:2788

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
073d463fff28b5f72bb792a9c36e5577

SHA1
256cf64206fe10f571ea43b8531dbae0e05c4073

SHA256
4acd251cbdac52f30ff6f24253bfa5ed0c45d3e7f30eb2144f43ae756889d59d

SHA512
dddb6020c2ab1641701058b85b9bdf74d657f6f64e8d637a27608eb45afc22bd0be617dfd1c11cf3806bcd0afbec0c23c3d48d0f91b7a4bf6ffc8af06a9bb773

Download Submit
memory/2992-0-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2992-2-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2992-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download