3b305a731054072de0e0c4fff1edcdc316e22db6f1a3f8ca8dbe6c6a0d5c6fa9

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
03-08-2024 07:59

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General

Target

2024-08-03_e1c8ea3680cf064a701c2af34d66367d_cryptolocker.exe
Size

37KB
MD5

e1c8ea3680cf064a701c2af34d66367d
SHA1

6866f7ea39d9ea70d9cc92366b4bb252f49605fa
SHA256

3b305a731054072de0e0c4fff1edcdc316e22db6f1a3f8ca8dbe6c6a0d5c6fa9
SHA512

b6728450b9439870b9f1d1a9be670833c42b18bdd8858a2c46ac45a15f887d1a9d8594871362e25c5833cdd03f636224a3c774a90a0e61689197be524db97191
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITF:qDdFJy3QMOtEvwDpjjWMl7TF

Score

7^/10

discovery upx

Malware Config

Signatures

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-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation	2024-08-03_e1c8ea3680cf064a701c2af34d66367d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3028	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/5092-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x0009000000023462-13.dat	upx
behavioral2/memory/5092-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/3028-27-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-08-03_e1c8ea3680cf064a701c2af34d66367d_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5092 wrote to memory of 3028	5092	2024-08-03_e1c8ea3680cf064a701c2af34d66367d_cryptolocker.exe	84
PID 5092 wrote to memory of 3028	5092	2024-08-03_e1c8ea3680cf064a701c2af34d66367d_cryptolocker.exe	84
PID 5092 wrote to memory of 3028	5092	2024-08-03_e1c8ea3680cf064a701c2af34d66367d_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-08-03_e1c8ea3680cf064a701c2af34d66367d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-03_e1c8ea3680cf064a701c2af34d66367d_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5092
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:3028

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
37KB

MD5
8717f2b3a1320df0faf05eb95ab04ff3

SHA1
ec03a683c979194752f8113f6f4293ea00645c5d

SHA256
17b96796059da79ffe7c4d9699352ab233c0f0e94cb2d14c7a9a63b9824620b2

SHA512
c99ebe3ed66d21d68c7c13f0e5329f66a2753305c2516a842d0e23bcf21399d14015fa94e8ec1d51e17ee1f473a84129d3291eb1c5870cfc47a9eb7f01427d90

Download Submit
memory/3028-20-0x0000000001F50000-0x0000000001F56000-memory.dmp

Filesize
24KB

Download
memory/3028-21-0x0000000001F70000-0x0000000001F76000-memory.dmp

Filesize
24KB

Download
memory/3028-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/5092-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/5092-1-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download
memory/5092-2-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download
memory/5092-3-0x0000000000690000-0x0000000000696000-memory.dmp

Filesize
24KB

Download
memory/5092-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download