f98a231b2e8b376424c7a407faf380e16991300e8d383b6170ae3ad1bf22005b

Analysis

max time kernel
148s
max time network
152s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
21/02/2024, 21:29

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General

Target

2024-02-21_4bea69608e676ccdd5d750640a5a62df_cryptolocker.exe
Size

55KB
MD5

4bea69608e676ccdd5d750640a5a62df
SHA1

edb95331af4774c1b1331ba6bd7992b8a8c2b750
SHA256

f98a231b2e8b376424c7a407faf380e16991300e8d383b6170ae3ad1bf22005b
SHA512

d1740a30453b6c12bdf489e2aba0bdee957232552b0eb803b9dee49792d0e2010a413b2933e2c9d230f1baa248721b75a4030940d7d2f98ffbe50b06c7be14bd
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/iVTab3GRuv3VylSV/Cd9z3F:79mqyNhQMOtEvwDpjBPY7xv3g8SZ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/3048-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000900000001227e-11.dat	CryptoLocker_rule2
behavioral1/memory/3048-14-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3016-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/3048-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000900000001227e-11.dat	CryptoLocker_set1
behavioral1/memory/3048-14-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3016-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
3016	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
3048	2024-02-21_4bea69608e676ccdd5d750640a5a62df_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 3048 wrote to memory of 3016	3048	2024-02-21_4bea69608e676ccdd5d750640a5a62df_cryptolocker.exe	28
PID 3048 wrote to memory of 3016	3048	2024-02-21_4bea69608e676ccdd5d750640a5a62df_cryptolocker.exe	28
PID 3048 wrote to memory of 3016	3048	2024-02-21_4bea69608e676ccdd5d750640a5a62df_cryptolocker.exe	28
PID 3048 wrote to memory of 3016	3048	2024-02-21_4bea69608e676ccdd5d750640a5a62df_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-21_4bea69608e676ccdd5d750640a5a62df_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-21_4bea69608e676ccdd5d750640a5a62df_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3048
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3016

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\asih.exe

Filesize
55KB

MD5
944eb87f041dbb7654452cfb417c13bc

SHA1
3d6c3c7b8cb455270587d89e71c1546d8c18267a

SHA256
0a279ed97c4633deb95abf68a44ec49851f86368166ef870c23845b56c9c7d99

SHA512
de838510edfdef9840f0c8e9188cf1d89b1bf7d91418bdebc01b58bc524cd0d22f1ba2efda99729141b92eb4f3c42227829cf6a35e7934bf64bb9f4bf90a36f8

Download Submit
memory/3016-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3016-19-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/3016-18-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/3048-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3048-1-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/3048-2-0x0000000000450000-0x0000000000456000-memory.dmp

Filesize
24KB

Download
memory/3048-3-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/3048-14-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download