0e492448fe23e882daf87a3bfe1b2b6768c1bb2d39152a3328ee763a4e7c3da0

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28/02/2024, 02:54

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General

Target

2024-02-28_ba15e328719176a795aa0b4ba4dd6a9f_cryptolocker.exe
Size

40KB
MD5

ba15e328719176a795aa0b4ba4dd6a9f
SHA1

e3bc34171d6b361d07a8fc6ea9468c9938229357
SHA256

0e492448fe23e882daf87a3bfe1b2b6768c1bb2d39152a3328ee763a4e7c3da0
SHA512

b70f2ba0557cc13161333be8310b5bf96e0a3fe73fa496330272e5418353384ee4f3eac27ddc919ac41e426b1c365303dd1e8b8e3f9cd1f49e45c8137996168e
SSDEEP

384:60VkMq01bJ3wtEwPS8HLEh+Jagz+3be+26aIIcVRYpetOOtEvwDpjqIGRmdHzOOZ:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqh6/7

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/2924-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000400000001e980-13.dat	CryptoLocker_rule2
behavioral2/memory/2924-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1300-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1300-53-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/2924-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000400000001e980-13.dat	CryptoLocker_set1
behavioral2/memory/2924-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1300-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1300-53-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/2924-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000400000001e980-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2924-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1300-18-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1300-53-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress

Checks computer location settings 2 TTPs 2 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-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	2024-02-28_ba15e328719176a795aa0b4ba4dd6a9f_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
1300	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 2924 wrote to memory of 1300	2924	2024-02-28_ba15e328719176a795aa0b4ba4dd6a9f_cryptolocker.exe	90
PID 2924 wrote to memory of 1300	2924	2024-02-28_ba15e328719176a795aa0b4ba4dd6a9f_cryptolocker.exe	90
PID 2924 wrote to memory of 1300	2924	2024-02-28_ba15e328719176a795aa0b4ba4dd6a9f_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-02-28_ba15e328719176a795aa0b4ba4dd6a9f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-28_ba15e328719176a795aa0b4ba4dd6a9f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2924
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:1300

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
40KB

MD5
ee421a4ebd51dd071978c0550b3b0d98

SHA1
bfdba850f0d1ed5e1a45c6a80ccde3dfa0b09853

SHA256
08a0e66e51cfdf47b0db4c7c32a3c61ba14eb3f39cef16486ce8cf93199a5538

SHA512
9d548cd0893c178132f0aa32855b761a8bcb2c769f6b5bda3b1b6e2f26c03efddb29ae3c52342553d31e48ef89f1a4333d70271abdb2837c059983f6e78e2c42

Download Submit
memory/1300-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1300-20-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/1300-23-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/1300-53-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2924-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2924-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2924-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2924-3-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/2924-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download