8b8b2444ddba70fedc57edf0607bd23165cc73a8e850c74a5983e98c7f0d3e9f

Analysis

max time kernel
141s
max time network
144s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
27/05/2024, 19:33

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General

Target

2024-05-27_69c9782fe9648090006ec238915006aa_cryptolocker.exe
Size

69KB
MD5

69c9782fe9648090006ec238915006aa
SHA1

51cc6569512943ea4474c4b1b4f0f3f3ea9764d3
SHA256

8b8b2444ddba70fedc57edf0607bd23165cc73a8e850c74a5983e98c7f0d3e9f
SHA512

c0efca8a9ae650ac1cf14abaa36882318d11714e5c661f69dd9eb9a452a99a9ea9475f13eeb19e43496809f18ba8182f8ee33fdd880122056db8f4952e01f3a0
SSDEEP

1536:quJu9cvMOtEvwDpjWYTjipvF2bx1PQAeY:78SEOtEvwDpjWYvQd2PV

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2648-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000015a2d-11.dat	CryptoLocker_rule2
behavioral1/memory/2648-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3012-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2648-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b000000015a2d-11.dat	CryptoLocker_set1
behavioral1/memory/2648-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3012-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/2648-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/files/0x000b000000015a2d-11.dat	UPX
behavioral1/memory/2648-17-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/3012-27-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
3012	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2648	2024-05-27_69c9782fe9648090006ec238915006aa_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2648-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x000b000000015a2d-11.dat	upx
behavioral1/memory/2648-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/3012-27-0x0000000000500000-0x000000000050F000-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 2648 wrote to memory of 3012	2648	2024-05-27_69c9782fe9648090006ec238915006aa_cryptolocker.exe	28
PID 2648 wrote to memory of 3012	2648	2024-05-27_69c9782fe9648090006ec238915006aa_cryptolocker.exe	28
PID 2648 wrote to memory of 3012	2648	2024-05-27_69c9782fe9648090006ec238915006aa_cryptolocker.exe	28
PID 2648 wrote to memory of 3012	2648	2024-05-27_69c9782fe9648090006ec238915006aa_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-27_69c9782fe9648090006ec238915006aa_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-27_69c9782fe9648090006ec238915006aa_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2648
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3012

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
70KB

MD5
065346d792bc58a094110afd686ad858

SHA1
456e25e118122fc45d781ef8b38e01971944ddfa

SHA256
86f748759f6cb51835caaf97765722a677b28dc9f1b8e723a79be830b351a22a

SHA512
377ed758feeb8142300261665e7e3b325f62884a28f14bd02ae27c32d0818d38c3f30ad3160729b4c74e6741dc9022211a10ec30aa5fe02db9b5e0eb172936c0

Download Submit
memory/2648-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2648-1-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/2648-2-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/2648-9-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/2648-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2648-14-0x0000000002480000-0x000000000248F000-memory.dmp

Filesize
60KB

Download
memory/3012-19-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/3012-20-0x0000000000450000-0x0000000000456000-memory.dmp

Filesize
24KB

Download
memory/3012-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download