0f0a748f4db21e1c7f6fa9eeafe72501e6ee304cf3c5802e11fecec7166c6b37

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
17-04-2024 04:15

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General

Target

2024-04-17_d9d623f0e34db6561de417c277793542_cryptolocker.exe
Size

42KB
MD5

d9d623f0e34db6561de417c277793542
SHA1

25299f307aed1a318ee838028b5336d176eb399c
SHA256

0f0a748f4db21e1c7f6fa9eeafe72501e6ee304cf3c5802e11fecec7166c6b37
SHA512

8cd5b6d4f5d59614d8ee8a0ce034cc18ea0d789587428cf2d0df950bb59a7a7f467c502d965af2b8cb2a592ffc25f62044ee0939f0bfb2f9d470db1253d5455a
SSDEEP

384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jo0nrlwfjDU3:bm74zYcgT/Ekn0ryfjC

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2084-0-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d000000014605-11.dat	CryptoLocker_rule2
behavioral1/memory/2084-16-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2528-17-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2528-27-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2528	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
2084	2024-04-17_d9d623f0e34db6561de417c277793542_cryptolocker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2084 wrote to memory of 2528	2084	2024-04-17_d9d623f0e34db6561de417c277793542_cryptolocker.exe	28
PID 2084 wrote to memory of 2528	2084	2024-04-17_d9d623f0e34db6561de417c277793542_cryptolocker.exe	28
PID 2084 wrote to memory of 2528	2084	2024-04-17_d9d623f0e34db6561de417c277793542_cryptolocker.exe	28
PID 2084 wrote to memory of 2528	2084	2024-04-17_d9d623f0e34db6561de417c277793542_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-17_d9d623f0e34db6561de417c277793542_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-17_d9d623f0e34db6561de417c277793542_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2084
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2528

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\hasfj.exe

Filesize
42KB

MD5
220a0bd6bbac1d9a4478cff0562a7902

SHA1
1896cf25675d3aa4197fa1db7a48cc1064839645

SHA256
29cc6cd689176f9e1d551b7e4f6134952c72c9c3e92028aecee6a81179d7d45c

SHA512
84df2001765d10e9f99eb59be7a01b4049c3d4c5bfb8ea7205aae5faecc0e1e0eb2c6671c0e44e8acfba365d98db307d3495d6588353dab246a2581d40e1746c

Download Submit
memory/2084-0-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2084-1-0x0000000000450000-0x0000000000456000-memory.dmp

Filesize
24KB

Download
memory/2084-3-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/2084-2-0x0000000000450000-0x0000000000456000-memory.dmp

Filesize
24KB

Download
memory/2084-15-0x0000000001DC0000-0x0000000001DCD000-memory.dmp

Filesize
52KB

Download
memory/2084-16-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2528-17-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2528-19-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2528-20-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/2528-27-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download