85965502480f30e30bd3249728b4ccb68bded4545cb3dc404a48ac4dda00b157

Analysis

max time kernel
150s
max time network
152s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
26/01/2024, 16:23

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General

Target

2024-01-26_17afd1ee2b81165502ead44310fdd5e0_cryptolocker.exe
Size

41KB
MD5

17afd1ee2b81165502ead44310fdd5e0
SHA1

395edbe186524e8d56cc210b13be27f0151f705c
SHA256

85965502480f30e30bd3249728b4ccb68bded4545cb3dc404a48ac4dda00b157
SHA512

16da1a312664d3ef14086ac3dd444cf3316db064e7ea128c66e94de5017f74908f72f2565da1a3f8ce1ebc0d095a9ea442644b8ee788c78e4456aa6c43871301
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3Kx1:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xk

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000012252-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000012252-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2696	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2908	2024-01-26_17afd1ee2b81165502ead44310fdd5e0_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
2908	2024-01-26_17afd1ee2b81165502ead44310fdd5e0_cryptolocker.exe
2696	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2908 wrote to memory of 2696	2908	2024-01-26_17afd1ee2b81165502ead44310fdd5e0_cryptolocker.exe	28
PID 2908 wrote to memory of 2696	2908	2024-01-26_17afd1ee2b81165502ead44310fdd5e0_cryptolocker.exe	28
PID 2908 wrote to memory of 2696	2908	2024-01-26_17afd1ee2b81165502ead44310fdd5e0_cryptolocker.exe	28
PID 2908 wrote to memory of 2696	2908	2024-01-26_17afd1ee2b81165502ead44310fdd5e0_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-26_17afd1ee2b81165502ead44310fdd5e0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-26_17afd1ee2b81165502ead44310fdd5e0_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2908
- 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:2696

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
41KB

MD5
bab68ca0dde996dedfdf4a39cc68a00a

SHA1
43fd6a712cd9bc46b4502f36793a60303f75d912

SHA256
ff3feb6305a719862d8991c4b168cdc639ed24e0bcebd2153d96c87c4bab5eb5

SHA512
4aba399066357711dc9be1d7b1ae42baf3f6e10af5dfaed08a5b1a6b22c1d38a444cf6d3b3623a7187190f64f4fc2523295627437c68bd38f8a1aa60c76676dc

Download Submit
memory/2908-0-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2908-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2908-1-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download