81e46b38ce7d88c1cccd60a3bf6e3a110732c848b439cb897e7dc0a6e764230b

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
10/10/2024, 03:17

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General

Target

2024-10-10_f5213064e1a2eae1643e22316087b4aa_cryptolocker.exe
Size

65KB
MD5

f5213064e1a2eae1643e22316087b4aa
SHA1

7e632562d88d2c43aa8bc5536daa49ded4947826
SHA256

81e46b38ce7d88c1cccd60a3bf6e3a110732c848b439cb897e7dc0a6e764230b
SHA512

d80a3c46867b1c1debb4eb2b053339f58651134721b7c943319d1e336f8e8891982335b04172d39f8d9a420324d0d05b59c2d060f48763cf470c8c68ae1b2692
SSDEEP

1536:z6QFElP6n+gKmddpMOtEvwDpj9aYaFAeB6:z6a+CdOOtEvwDpjQc

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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	2024-10-10_f5213064e1a2eae1643e22316087b4aa_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1420	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3876-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x0008000000023cc6-13.dat	upx
behavioral2/memory/3876-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1420-26-0x0000000000500000-0x0000000000510000-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	2024-10-10_f5213064e1a2eae1643e22316087b4aa_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 3876 wrote to memory of 1420	3876	2024-10-10_f5213064e1a2eae1643e22316087b4aa_cryptolocker.exe	85
PID 3876 wrote to memory of 1420	3876	2024-10-10_f5213064e1a2eae1643e22316087b4aa_cryptolocker.exe	85
PID 3876 wrote to memory of 1420	3876	2024-10-10_f5213064e1a2eae1643e22316087b4aa_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-10-10_f5213064e1a2eae1643e22316087b4aa_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-10_f5213064e1a2eae1643e22316087b4aa_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3876
- 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:1420

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
65KB

MD5
161dffb9a110306787ca2d44757f84a8

SHA1
cf94191d3f0234bea7dfd3738bdb64060f55ea70

SHA256
61c135f31073247d1efa058baeddc53fadb11ee709c08a2b60d5f49ca30e3b23

SHA512
b9c67270cac3bf6f4be15bca39c509b1781c26c81002ef6974d0c80246a99238c9b9877df998dfe28b4a2a8e99d821953f56778fbe70e19dbae3c9324f28a0be

Download Submit
memory/1420-19-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/1420-20-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/1420-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3876-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3876-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3876-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3876-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/3876-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download