daac2ad5a32d4a6cdadf40998e9795a6c1489ad33290049653fa9f7060323f6e

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
25/05/2024, 00:55

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General

Target

2024-05-25_523e411b95e2f1331142174133befc62_cryptolocker.exe
Size

53KB
MD5

523e411b95e2f1331142174133befc62
SHA1

130faa5ac9ccb777c2d7ac8400e15dacd6083fe8
SHA256

daac2ad5a32d4a6cdadf40998e9795a6c1489ad33290049653fa9f7060323f6e
SHA512

ad8ff9349616186922d1b819a64d41e393e4b7d5c3d0b999e9fc59c13145bc3666d7ab74699e50e1b108944e0054ee8bfdb208c240c51ba8b0f6e803aaafc6ee
SSDEEP

768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YY1J+OTOkgr:z6QFElP6n+gKmddpMOtEvwDpj31ikgr

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2044-8-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c000000013a7c-11.dat	CryptoLocker_rule2
behavioral1/memory/2548-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2548-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2044-8-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c000000013a7c-11.dat	CryptoLocker_set1
behavioral1/memory/2548-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2548-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/2044-8-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000c000000013a7c-11.dat	UPX
behavioral1/memory/2548-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2548-25-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2548	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2044	2024-05-25_523e411b95e2f1331142174133befc62_cryptolocker.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2044-8-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000c000000013a7c-11.dat	upx
behavioral1/memory/2548-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2548-25-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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 2044 wrote to memory of 2548	2044	2024-05-25_523e411b95e2f1331142174133befc62_cryptolocker.exe	28
PID 2044 wrote to memory of 2548	2044	2024-05-25_523e411b95e2f1331142174133befc62_cryptolocker.exe	28
PID 2044 wrote to memory of 2548	2044	2024-05-25_523e411b95e2f1331142174133befc62_cryptolocker.exe	28
PID 2044 wrote to memory of 2548	2044	2024-05-25_523e411b95e2f1331142174133befc62_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-25_523e411b95e2f1331142174133befc62_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-25_523e411b95e2f1331142174133befc62_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2044
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2548

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
53KB

MD5
00bda3fcb46c0c4e19cef86e56b5bace

SHA1
7d4e109ba5ea80513c4ecb8a4097ba4bd47cf25d

SHA256
72c86859d056480b2137ece18c7987664797208aa7256b1521232bcabc48e341

SHA512
522140b9e8466e609177a64ca69d443a72d82ae56420915532ea4760374c377ab371531e243ff99191009c0f307242f5dccb2626cfacd9d36805b9d956b83f60

Download Submit
memory/2044-0-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2044-1-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2044-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2044-8-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2548-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2548-17-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download
memory/2548-24-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2548-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download