2866519de8acbee0b2448020376e92835f081af0ff0da9bebfe4dbb6800bde55

Analysis

max time kernel
149s
max time network
152s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
23/01/2024, 00:24

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General

Target

2024-01-23_35f793b5b94c775ebe787f1f01b775b9_cryptolocker.exe
Size

31KB
MD5

35f793b5b94c775ebe787f1f01b775b9
SHA1

23f9436495fda723ec0fe29dea37877b1596abd5
SHA256

2866519de8acbee0b2448020376e92835f081af0ff0da9bebfe4dbb6800bde55
SHA512

7b058d0052b757b7d446d998f0f4ef85867f1c22ab94d9f2f80ff881d806f225607fd3ecb13be54751cfd7f4f218c7f59384d767668c7ebfa97a53808870169e
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9R9U1gpPQJ:b7o/2n1TCraU6GD1a4Xt9R21TJ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000012308-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2840	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
2240	2024-01-23_35f793b5b94c775ebe787f1f01b775b9_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
2240	2024-01-23_35f793b5b94c775ebe787f1f01b775b9_cryptolocker.exe
2840	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2240 wrote to memory of 2840	2240	2024-01-23_35f793b5b94c775ebe787f1f01b775b9_cryptolocker.exe	28
PID 2240 wrote to memory of 2840	2240	2024-01-23_35f793b5b94c775ebe787f1f01b775b9_cryptolocker.exe	28
PID 2240 wrote to memory of 2840	2240	2024-01-23_35f793b5b94c775ebe787f1f01b775b9_cryptolocker.exe	28
PID 2240 wrote to memory of 2840	2240	2024-01-23_35f793b5b94c775ebe787f1f01b775b9_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-23_35f793b5b94c775ebe787f1f01b775b9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-23_35f793b5b94c775ebe787f1f01b775b9_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2240
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:2840

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\rewok.exe

Filesize
31KB

MD5
b1cc818ae6d837598cc7a843782f94c2

SHA1
29cf1c548d928e702187c8c75883601b51137012

SHA256
b76ca9e5558136f0c397c0f20cbc4c63d9646f161a03d86c1eaba8b4ae2a5e1e

SHA512
fbe75a23c79b26b7014b363f29fff5425aaa6fe2fa64abfd65e25d6a808f5f5b254cec97358ebe389d15c934f274eb4c1e602deec8f360f7652541e1a71acad6

Download Submit
memory/2240-0-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2240-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2240-2-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2840-23-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download