c459c36794e8a9e793fd40cdf34a946d34d47356c2cff4f7d77ad82b22c3d929

Analysis

max time kernel
150s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
09/09/2024, 23:43

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General

Target

2024-09-09_b80498461bd070daa2ebf31be8a3d3db_cryptolocker.exe
Size

28KB
MD5

b80498461bd070daa2ebf31be8a3d3db
SHA1

a0b412c922af9866fbbc4988604015ebc6b0d367
SHA256

c459c36794e8a9e793fd40cdf34a946d34d47356c2cff4f7d77ad82b22c3d929
SHA512

1e0bcd97efd837c879f8892dd97c7d3ab0d1b1db0229b3b9c9495e0604328961a178c637ec9d2cc649472f18f13f6ca477925bb75457887c28c555c70aca31c7
SSDEEP

384:bFgFQrdSmuQ8WFqxpj5cpyIuYxVe3FSr+OLfjDp+0g/HNblX7QCOBqYX:bFgm5zusFUB2preAr+Ofjg0STX73OBqQ

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	2024-09-09_b80498461bd070daa2ebf31be8a3d3db_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2620	lossy.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1372-0-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral2/files/0x00080000000234e3-13.dat	upx
behavioral2/memory/1372-18-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral2/memory/2620-27-0x0000000008000000-0x000000000800E000-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	2024-09-09_b80498461bd070daa2ebf31be8a3d3db_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	lossy.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1372 wrote to memory of 2620	1372	2024-09-09_b80498461bd070daa2ebf31be8a3d3db_cryptolocker.exe	86
PID 1372 wrote to memory of 2620	1372	2024-09-09_b80498461bd070daa2ebf31be8a3d3db_cryptolocker.exe	86
PID 1372 wrote to memory of 2620	1372	2024-09-09_b80498461bd070daa2ebf31be8a3d3db_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-09-09_b80498461bd070daa2ebf31be8a3d3db_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-09_b80498461bd070daa2ebf31be8a3d3db_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1372
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2620

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\lossy.exe

Filesize
28KB

MD5
cd6134571fde8ac0bd6bbe5449855043

SHA1
95d9282a4282755f6daaee6f17e0ceb6ac3d9c77

SHA256
842bc568e124944e6cb45d3c55d8f58735f1526cc73a3d4a2027a78541be956a

SHA512
d4486227da4ce3fb692009f66659b42d198889cb29b5911cb8ffd08c8f1d8ca6e6d93a8627edd5876be5a2d405eba53401f98c42070ed74c04b23646537a00ee

Download Submit
memory/1372-0-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/1372-1-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download
memory/1372-2-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download
memory/1372-3-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/1372-18-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/2620-20-0x0000000001FC0000-0x0000000001FC6000-memory.dmp

Filesize
24KB

Download
memory/2620-21-0x0000000001FE0000-0x0000000001FE6000-memory.dmp

Filesize
24KB

Download
memory/2620-27-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download