6b455ed7df74aee1433dd2715147754c02484e1f0778cec9f0a978a2858228e5

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
28/05/2024, 21:28

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General

Target

2024-05-28_5032d592798192bdd073107f4ebb6af0_cryptolocker.exe
Size

97KB
MD5

5032d592798192bdd073107f4ebb6af0
SHA1

2976a91c70b945ac08d08a4efe67e1362c3819d0
SHA256

6b455ed7df74aee1433dd2715147754c02484e1f0778cec9f0a978a2858228e5
SHA512

4da1a9e50d2ede6963eee216700261de9295c7209ecb752d423a98f6d784842cfe8ac9b2713af6ca98a8e180ebc12ce2815deb367be92de6c8cf4443e0aa6dc8
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgp01U:AnBdOOtEvwDpj6zy

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1636-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a000000012286-11.dat	CryptoLocker_rule2
behavioral1/memory/1576-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1636-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1576-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/1636-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000a000000012286-11.dat	CryptoLocker_set1
behavioral1/memory/1576-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1636-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1576-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/1636-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/files/0x000a000000012286-11.dat	UPX
behavioral1/memory/1576-17-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/1636-16-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/1576-27-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
1576	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1636	2024-05-28_5032d592798192bdd073107f4ebb6af0_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1636-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x000a000000012286-11.dat	upx
behavioral1/memory/1576-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/1636-16-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/1576-27-0x0000000000500000-0x000000000050F000-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 1636 wrote to memory of 1576	1636	2024-05-28_5032d592798192bdd073107f4ebb6af0_cryptolocker.exe	28
PID 1636 wrote to memory of 1576	1636	2024-05-28_5032d592798192bdd073107f4ebb6af0_cryptolocker.exe	28
PID 1636 wrote to memory of 1576	1636	2024-05-28_5032d592798192bdd073107f4ebb6af0_cryptolocker.exe	28
PID 1636 wrote to memory of 1576	1636	2024-05-28_5032d592798192bdd073107f4ebb6af0_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-28_5032d592798192bdd073107f4ebb6af0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-28_5032d592798192bdd073107f4ebb6af0_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1636
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1576

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
97KB

MD5
8c1f3587f9ad570ea78e17e97a9b9bd7

SHA1
bd722c4d8b973049430819d09e60b0611a0aeee2

SHA256
f24e546482120d1c544a01c8c0ff0204e2cc2c0be84e15b5f8a529abb4bf4f68

SHA512
a095fa9b17e1f3e2b198c689a7b708907b4352fbc2d64131caeff34e04e3bf07cbe4182543f46f05183ac5cdd06a775f5776ddfe8d502adbeed0becbac58d7cb

Download Submit
memory/1576-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1576-19-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1576-20-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/1576-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1636-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1636-2-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/1636-9-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/1636-1-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/1636-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download