9f6cb1f78feebc9f67cd5f5d049e65b8c3093df4a00ac61a4aa4a3c4e65bb67d

Analysis

max time kernel
151s
max time network
162s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
14/03/2024, 05:31

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General

Target

2024-03-14_29a538ea25c2ae46adba1992d93ae48d_cryptolocker.exe
Size

79KB
MD5

29a538ea25c2ae46adba1992d93ae48d
SHA1

3dfb08251f715cc40eba6125df3efaf41ded1c60
SHA256

9f6cb1f78feebc9f67cd5f5d049e65b8c3093df4a00ac61a4aa4a3c4e65bb67d
SHA512

764b5cbaa60449d2a73cc1c7ea50aced2327476dd1153dc124a23a1d3b4a2a5e76734604af15fbc72bfb223b5ccb57b641fb1ff76edb4f41fb841b02081d7ef6
SSDEEP

768:zQz7yVEhs9+syJP6ntOOtEvwDpjFelaB7pBlqrr1HBJooSeKzu1adyBv:zj+soPSMOtEvwDpj4ktBl01hJ0tq1kyZ

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/3260-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023210-13.dat	CryptoLocker_rule2
behavioral2/memory/4344-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3260-20-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4344-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/3260-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0007000000023210-13.dat	CryptoLocker_set1
behavioral2/memory/4344-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3260-20-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4344-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/3260-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x0007000000023210-13.dat	UPX
behavioral2/memory/4344-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/3260-20-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/4344-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

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-1-5-21-557049126-2506969350-2798870634-1000\Control Panel\International\Geo\Nation	2024-03-14_29a538ea25c2ae46adba1992d93ae48d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4344	misid.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3260-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x0007000000023210-13.dat	upx
behavioral2/memory/4344-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/3260-20-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/4344-27-0x0000000000500000-0x0000000000510000-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 3 IoCs

description	pid	Process	procid_target
PID 3260 wrote to memory of 4344	3260	2024-03-14_29a538ea25c2ae46adba1992d93ae48d_cryptolocker.exe	90
PID 3260 wrote to memory of 4344	3260	2024-03-14_29a538ea25c2ae46adba1992d93ae48d_cryptolocker.exe	90
PID 3260 wrote to memory of 4344	3260	2024-03-14_29a538ea25c2ae46adba1992d93ae48d_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-03-14_29a538ea25c2ae46adba1992d93ae48d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-14_29a538ea25c2ae46adba1992d93ae48d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3260
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4344

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
79KB

MD5
c35b6fd3cb19c32ce68f6fc633f5d9c4

SHA1
6001b7a6ec9dfefe28973f72e9c18d31208a528a

SHA256
e1a86874feb60a9ea895e14824eb46476e6d0ad2aad4c7fb449527f4d0c08604

SHA512
79b275a32147e22cfdbdc1465dbda14b36683339c9e359a430139067975ee1d2d848455ec5573230b2ddc5b064a89f87744565a03b3ee099d7ac68930f0c3720

Download Submit
memory/3260-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3260-1-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/3260-2-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/3260-3-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download
memory/3260-20-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4344-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4344-21-0x0000000001F60000-0x0000000001F66000-memory.dmp

Filesize
24KB

Download
memory/4344-19-0x0000000001F80000-0x0000000001F86000-memory.dmp

Filesize
24KB

Download
memory/4344-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download