1c5d3ac72fe77921093eb99994d2dfbadc7f7da7284e95ed3b2b5cc8e2a0e4f3

Analysis

max time kernel
146s
max time network
148s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
03/06/2024, 03:24

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General

Target

2024-06-03_06928b51b172249e6ce5e5d66a37007c_cryptolocker.exe
Size

71KB
MD5

06928b51b172249e6ce5e5d66a37007c
SHA1

8f082fd70e9192e861d9813bca790ab370f8b2a1
SHA256

1c5d3ac72fe77921093eb99994d2dfbadc7f7da7284e95ed3b2b5cc8e2a0e4f3
SHA512

95d6fd5f61aca4b60f1fa8c4e0b5fc0188e278d1a948312b1fdbf0bbd085c9fa56b4b3fd974d2897831d41bfa20fff531bf94b11b1aaf121ee576e7163f3aab5
SSDEEP

1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs9ig:C4Q2c94OtEvwDpj4H8zw

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2360-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c00000001342e-11.dat	CryptoLocker_rule2
behavioral1/memory/2360-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2112-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2112-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/2360-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2112-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2112-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2360-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000c00000001342e-11.dat	UPX
behavioral1/memory/2360-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2112-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2112-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2112	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2360	2024-06-03_06928b51b172249e6ce5e5d66a37007c_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2360-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000c00000001342e-11.dat	upx
behavioral1/memory/2360-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2112-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2112-27-0x0000000000500000-0x0000000000510000-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 2360 wrote to memory of 2112	2360	2024-06-03_06928b51b172249e6ce5e5d66a37007c_cryptolocker.exe	28
PID 2360 wrote to memory of 2112	2360	2024-06-03_06928b51b172249e6ce5e5d66a37007c_cryptolocker.exe	28
PID 2360 wrote to memory of 2112	2360	2024-06-03_06928b51b172249e6ce5e5d66a37007c_cryptolocker.exe	28
PID 2360 wrote to memory of 2112	2360	2024-06-03_06928b51b172249e6ce5e5d66a37007c_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-03_06928b51b172249e6ce5e5d66a37007c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-03_06928b51b172249e6ce5e5d66a37007c_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2360
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2112

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\misid.exe

Filesize
71KB

MD5
271523f51276c0dd71ebbd13b6f39df3

SHA1
534c2c5cf456303ffb524e2f6e11f1ebba204f9f

SHA256
c0f7c2642418b6a5092b57407abeecf171b514af6ed5122a1ae8ad345eb9087d

SHA512
1cd6ef0c860d364d3dbf821cbd4d3e62cbe587f99e92ef5ffd5224cc3d5c625e205cc53f9376c1f262566e533b06c6f0c4e51846455ef70badd7def63fdb9c2e

Download Submit
memory/2112-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2112-19-0x0000000000210000-0x0000000000216000-memory.dmp

Filesize
24KB

Download
memory/2112-26-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2112-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2360-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2360-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2360-2-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2360-3-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/2360-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download