6f4a1ba016109311630133cb080aa03ed1280c1e3099f7a17975498bc3eb0d22

Analysis

max time kernel
147s
max time network
149s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
09/05/2024, 23:03

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General

Target

2024-05-09_4aebd60e7ff277321ab78c0746d6fb51_cryptolocker.exe
Size

38KB
MD5

4aebd60e7ff277321ab78c0746d6fb51
SHA1

789b8dbe3315f2146581c4d77deed242f701d8a5
SHA256

6f4a1ba016109311630133cb080aa03ed1280c1e3099f7a17975498bc3eb0d22
SHA512

c8aa2307cd5abe2975be5c93e3cb43037b6e743c5137d764e2b5df63966214d7555378a406a0690f3219f7180af560394bd28525c690927a5ff2e979b3e919aa
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITY9w:qDdFJy3QMOtEvwDpjjWMl7T/

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2228-8-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b00000001565d-24.dat	CryptoLocker_rule2
behavioral1/memory/3048-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2228-13-0x0000000001E90000-0x0000000001EA0000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2228-8-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b00000001565d-24.dat	CryptoLocker_set1
behavioral1/memory/3048-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2228-13-0x0000000001E90000-0x0000000001EA0000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/2228-8-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000b00000001565d-24.dat	UPX
behavioral1/memory/3048-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2228-13-0x0000000001E90000-0x0000000001EA0000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
3048	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2228	2024-05-09_4aebd60e7ff277321ab78c0746d6fb51_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2228-8-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000b00000001565d-24.dat	upx
behavioral1/memory/3048-26-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2228-13-0x0000000001E90000-0x0000000001EA0000-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 2228 wrote to memory of 3048	2228	2024-05-09_4aebd60e7ff277321ab78c0746d6fb51_cryptolocker.exe	28
PID 2228 wrote to memory of 3048	2228	2024-05-09_4aebd60e7ff277321ab78c0746d6fb51_cryptolocker.exe	28
PID 2228 wrote to memory of 3048	2228	2024-05-09_4aebd60e7ff277321ab78c0746d6fb51_cryptolocker.exe	28
PID 2228 wrote to memory of 3048	2228	2024-05-09_4aebd60e7ff277321ab78c0746d6fb51_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-09_4aebd60e7ff277321ab78c0746d6fb51_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-09_4aebd60e7ff277321ab78c0746d6fb51_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2228
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3048

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

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
38KB

MD5
161c2215709efb00e9def5ea04f6f110

SHA1
db08d372f768168a02772ff1f03b471810a578db

SHA256
1356104043724105ef079a02e223c4c23f50038c31654a52dcfd2ecb126f747b

SHA512
8086ecc87230b5ba464bae720ec02c270dce0def81a99bbbc6364d8ed82ce1b2744be63d8c35f657e9b9ec4497d62c0255510a3703d785f27dc28aeaab731fdc

Download Submit
memory/2228-9-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/2228-8-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2228-13-0x0000000001E90000-0x0000000001EA0000-memory.dmp

Filesize
64KB

Download
memory/2228-1-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/2228-0-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/3048-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3048-25-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/3048-18-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download