bf0e262933e7c8c3b504d6f1edd268ead9a6e9f334cc5521de1c91739f926b6d

Analysis

max time kernel
150s
max time network
156s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
04/01/2024, 15:13

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General

Target

2024-01-03_110e726ba3d8c204545f32831e719c24_cryptolocker.exe
Size

74KB
MD5

110e726ba3d8c204545f32831e719c24
SHA1

a5f73b66b4fee7da435d3a40c1b7805a21664aeb
SHA256

bf0e262933e7c8c3b504d6f1edd268ead9a6e9f334cc5521de1c91739f926b6d
SHA512

e800761b36077be0c8ba446d9ed5b0376f14da136d12803d5f485d57359ae08d83033ee56b0a6f99b907f6f6aada7eaebd9af12b7fba29b70e1e53e5e2352091
SSDEEP

1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOAkXtBdh:T6a+rdOOtEvwDpjNtH

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2704	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1756	2024-01-03_110e726ba3d8c204545f32831e719c24_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1756-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x0009000000012261-11.dat	upx
behavioral1/memory/1756-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2704-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2704-27-0x0000000000500000-0x0000000000510000-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 1756 wrote to memory of 2704	1756	2024-01-03_110e726ba3d8c204545f32831e719c24_cryptolocker.exe	28
PID 1756 wrote to memory of 2704	1756	2024-01-03_110e726ba3d8c204545f32831e719c24_cryptolocker.exe	28
PID 1756 wrote to memory of 2704	1756	2024-01-03_110e726ba3d8c204545f32831e719c24_cryptolocker.exe	28
PID 1756 wrote to memory of 2704	1756	2024-01-03_110e726ba3d8c204545f32831e719c24_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-03_110e726ba3d8c204545f32831e719c24_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-03_110e726ba3d8c204545f32831e719c24_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1756
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2704

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
74KB

MD5
13310f03fb5779596b5802b4d1af58d1

SHA1
ce0a9068632d6db037a1e1cd207d748df65a69de

SHA256
3c18ecd66bd5a6c29fb2d831b150c46e6d2a90a89df9987f083af2a1d2dda01f

SHA512
09da8f9d7aa42dd0a410e725ad3ee20aa0003c56f9781a30f82242b653fd7af58f73d4c0573c0386498113815a5ba80f2e27ac2f419138a67863bbd19b70d66d

Download Submit
memory/1756-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1756-1-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/1756-2-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/1756-3-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/1756-16-0x0000000001EB0000-0x0000000001EC0000-memory.dmp

Filesize
64KB

Download
memory/1756-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2704-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2704-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2704-26-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2704-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download