68259d48cec2aff676da193dc411c37cf494df004cecf679a59a581b33e6be5e

Analysis

max time kernel
106s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
25-01-2024 23:22

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General

Target

2024-01-25_32632287259e00547bd7070d6bf7e959_cryptolocker.exe
Size

56KB
MD5

32632287259e00547bd7070d6bf7e959
SHA1

aac5c48b7604aca1edb34de3478d79f75978ce3f
SHA256

68259d48cec2aff676da193dc411c37cf494df004cecf679a59a581b33e6be5e
SHA512

27ce564f29ad2979b99ed4a087f6b3ffa8dcdc71dbaa767b1c5d3e5d3db3c1af93c4a02f4b93c166b3320637fd77c7900a6432602991410bbec3d929429dae7d
SSDEEP

768:zQz7yVEhs9+syJP6ntOOtEvwDpjFeV0ZOfcpLzbh:zj+soPSMOtEvwDpj4yzbh

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/3932-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000f000000023163-13.dat	CryptoLocker_rule2
behavioral2/memory/3932-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2816-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2816-55-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/3932-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000f000000023163-13.dat	CryptoLocker_set1
behavioral2/memory/3932-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2816-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2816-55-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/3932-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000f000000023163-13.dat	UPX
behavioral2/memory/3932-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/2816-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/2816-55-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-01-25_32632287259e00547bd7070d6bf7e959_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
2816	misid.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3932-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000f000000023163-13.dat	upx
behavioral2/memory/3932-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/2816-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/2816-55-0x0000000000500000-0x0000000000510000-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 3932 wrote to memory of 2816	3932	2024-01-25_32632287259e00547bd7070d6bf7e959_cryptolocker.exe	86
PID 3932 wrote to memory of 2816	3932	2024-01-25_32632287259e00547bd7070d6bf7e959_cryptolocker.exe	86
PID 3932 wrote to memory of 2816	3932	2024-01-25_32632287259e00547bd7070d6bf7e959_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-01-25_32632287259e00547bd7070d6bf7e959_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-25_32632287259e00547bd7070d6bf7e959_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3932
- 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:2816

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

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Downloads

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

Filesize
56KB

MD5
2cd05b433ae33fd2477b54b214c514c2

SHA1
73542aa8c432c58ffb13cc54d9c955d29fc74762

SHA256
e09755682771c96e9aab07bc84807ba801e8fcacfacd793242e66299d4f155f3

SHA512
5e1419d58541c96ec8d02740dafa1aa00bba6345121d12f8ce3bb2acd14f340b933600c587b56d91c73e69b9b71e459ad2265e4fe9b9700c39ccc8b7dd9606d9

Download Submit
memory/2816-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2816-20-0x0000000000650000-0x0000000000656000-memory.dmp

Filesize
24KB

Download
memory/2816-21-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/2816-55-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3932-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3932-1-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/3932-2-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/3932-3-0x0000000000710000-0x0000000000716000-memory.dmp

Filesize
24KB

Download
memory/3932-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download