5428e74024e277c2c7bea571e9a0a4d6956d01471af9c48f290a66a54794e28a

Analysis

max time kernel
150s
max time network
156s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
03/06/2024, 03:31

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General

Target

2024-06-03_3012bf9abe366027967fc55c1d15221c_cryptolocker.exe
Size

67KB
MD5

3012bf9abe366027967fc55c1d15221c
SHA1

3d1b9e7c990cb9785636e777578c0509de11996e
SHA256

5428e74024e277c2c7bea571e9a0a4d6956d01471af9c48f290a66a54794e28a
SHA512

fbbaf7ece2f035d17fc54cf3510fdbc9da09b1993fb1ed69c8af9f6aceb776d8545aa72afc72dc5291f745e9236d12704c3d41dde295e4c45e78f9fb488bd183
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjYZ8xDyfn:1nK6a+qdOOtEvwDpjc

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2240-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x0009000000015c5d-14.dat	CryptoLocker_rule2
behavioral1/memory/2240-15-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3012-25-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2240-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/files/0x0009000000015c5d-14.dat	CryptoLocker_set1
behavioral1/memory/2240-15-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/memory/3012-25-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/2240-0-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/files/0x0009000000015c5d-14.dat	UPX
behavioral1/memory/2240-15-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/memory/3012-25-0x0000000000500000-0x000000000050F311-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
3012	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2240	2024-06-03_3012bf9abe366027967fc55c1d15221c_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2240-0-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/files/0x0009000000015c5d-14.dat	upx
behavioral1/memory/2240-15-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/3012-25-0x0000000000500000-0x000000000050F311-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 2240 wrote to memory of 3012	2240	2024-06-03_3012bf9abe366027967fc55c1d15221c_cryptolocker.exe	28
PID 2240 wrote to memory of 3012	2240	2024-06-03_3012bf9abe366027967fc55c1d15221c_cryptolocker.exe	28
PID 2240 wrote to memory of 3012	2240	2024-06-03_3012bf9abe366027967fc55c1d15221c_cryptolocker.exe	28
PID 2240 wrote to memory of 3012	2240	2024-06-03_3012bf9abe366027967fc55c1d15221c_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-03_3012bf9abe366027967fc55c1d15221c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-03_3012bf9abe366027967fc55c1d15221c_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2240
- 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

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

Filesize
67KB

MD5
1d9f515cb8b960103a43956b98dcf4dc

SHA1
919f9c1ca9d7e87493eea0a6a3b40e08aca7e97a

SHA256
8bfccc3159e57ef400ffe09d9df289d729cd34cced73955d68527f508c74eb2c

SHA512
b7f1b4ecd8f9f4c80a643b894c299bf96280947a704e8ce50f9457dd3c30cc6f4445d9603a86c43acadd82b98187d40ddaff36facab718ab39cd9f51229e47f5

Download Submit
memory/2240-0-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2240-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2240-2-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2240-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2240-15-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/3012-17-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/3012-18-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download
memory/3012-25-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download