c1ba8e2cea8da0fc19f8d3818503d1f4dafd317f78a8ffb886a300a4fbbee830

Analysis

max time kernel
148s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
21-09-2024 00:54

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General

Target

2024-09-21_84be12c8e2b8a7affd1df4d37e7f770b_cryptolocker.exe
Size

69KB
MD5

84be12c8e2b8a7affd1df4d37e7f770b
SHA1

aaa7debae3e2201c6b82c876dc12b5b6dcd54e84
SHA256

c1ba8e2cea8da0fc19f8d3818503d1f4dafd317f78a8ffb886a300a4fbbee830
SHA512

06ab3a55b344231baa67182751a406de1d955dcfb1cd1d5a70d542b30ced7d0ba3217bccc09c74dd3d35aedb9a95b9262fdc6411eacd1ca17333a79ccbdc3f79
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjYibAoQRc:1nK6a+qdOOtEvwDpjB

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-1-5-21-4182098368-2521458979-3782681353-1000\Control Panel\International\Geo\Nation	2024-09-21_84be12c8e2b8a7affd1df4d37e7f770b_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3604	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4964-0-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/files/0x0009000000023401-13.dat	upx
behavioral2/memory/4964-16-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/memory/3604-26-0x0000000000500000-0x000000000050F311-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	2024-09-21_84be12c8e2b8a7affd1df4d37e7f770b_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 4964 wrote to memory of 3604	4964	2024-09-21_84be12c8e2b8a7affd1df4d37e7f770b_cryptolocker.exe	82
PID 4964 wrote to memory of 3604	4964	2024-09-21_84be12c8e2b8a7affd1df4d37e7f770b_cryptolocker.exe	82
PID 4964 wrote to memory of 3604	4964	2024-09-21_84be12c8e2b8a7affd1df4d37e7f770b_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-09-21_84be12c8e2b8a7affd1df4d37e7f770b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-21_84be12c8e2b8a7affd1df4d37e7f770b_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4964
- 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:3604

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

Replay Monitor

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Downloads

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

Filesize
69KB

MD5
f24ca9d13b7590ace7b10505fbfffa34

SHA1
2e31eb7aac7ae71ca19beb9910cae5e01c06774d

SHA256
8bea5c72803098edeef971af59fce31e449faefc8049513ab358f6daf80294af

SHA512
fd4a18e0bde1461270eb931933a6634a3d99a4b0b5c8328049ad7e9ff2080d03dd5c0a6cca168b31a62a8a9854b65bcac88b2c0f66c8967f5959535bd931c00d

Download Submit
memory/3604-25-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/3604-19-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/3604-26-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/4964-0-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/4964-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/4964-2-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/4964-3-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/4964-16-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download