e0f6c9e95622993abc4a3b12a2899a389a5fb879184c2ba31ceb8afb50f03d35

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
27/04/2024, 18:27

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General

Target

2024-04-27_acd3dbe861aac662bbda225f613e0e83_cryptolocker.exe
Size

42KB
MD5

acd3dbe861aac662bbda225f613e0e83
SHA1

86b44009bb30ec4e186ed94f5fc7db7de65bfd7d
SHA256

e0f6c9e95622993abc4a3b12a2899a389a5fb879184c2ba31ceb8afb50f03d35
SHA512

ed9bad1edb8463915d8783ebcb55b460dd132825f3cb01636b447529d7ad7c4e0a176357b053a743991485ffb65677042f0945426fe2a405d18d5778ee63dc5b
SSDEEP

768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqh6/CtXabM0A:6j+1NMOtEvwDpjrR2XabM0A

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4028-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000c000000023b4b-13.dat	CryptoLocker_rule2
behavioral2/memory/4000-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4028-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4000-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/4028-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000c000000023b4b-13.dat	CryptoLocker_set1
behavioral2/memory/4000-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4028-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4000-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/4028-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000c000000023b4b-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4000-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4028-18-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4000-27-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-877519540-908060166-1852957295-1000\Control Panel\International\Geo\Nation	2024-04-27_acd3dbe861aac662bbda225f613e0e83_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4000	misid.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4028 wrote to memory of 4000	4028	2024-04-27_acd3dbe861aac662bbda225f613e0e83_cryptolocker.exe	83
PID 4028 wrote to memory of 4000	4028	2024-04-27_acd3dbe861aac662bbda225f613e0e83_cryptolocker.exe	83
PID 4028 wrote to memory of 4000	4028	2024-04-27_acd3dbe861aac662bbda225f613e0e83_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-04-27_acd3dbe861aac662bbda225f613e0e83_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-27_acd3dbe861aac662bbda225f613e0e83_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4028
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4000

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

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\misid.exe

Filesize
42KB

MD5
4831211a7b00f659f3cc64076cba0069

SHA1
4783067775367d0c3644f597dd553f7dd030c045

SHA256
7900b281f229747010d244340a12befdcc51de29978273ccd4dd35b019bf1d59

SHA512
33fe9c8173efeea6ea98efc9b4bce6b9c1963db72a8181da3faabac1d667a07bcbefe4ca6606830cfd9b4feb822762f40b7430c2981972213a2122eebe9c172e

Download Submit
memory/4000-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4000-20-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/4000-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4000-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4028-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4028-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/4028-2-0x0000000000640000-0x0000000000646000-memory.dmp

Filesize
24KB

Download
memory/4028-9-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/4028-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download