5737522f9e0641491b13e21409f8b292a9bf091dfd4a133a8de663789d539751

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
22-05-2024 19:12

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General

Target

2024052158e14fa6a4bc5e1abc416863352b3109cryptolocker.exe
Size

52KB
MD5

58e14fa6a4bc5e1abc416863352b3109
SHA1

8ede4fc8dab57627ebd6e3f31daea0e52cadbc19
SHA256

5737522f9e0641491b13e21409f8b292a9bf091dfd4a133a8de663789d539751
SHA512

189bbc80ec019003fe5abe8c9e63b2b5a982b7cd91fd7c7a4446b2ba85cdab86e9459165051b3d1d667eaad28e3e3b032c07fad874bbac69ae4bc46a5276c57c
SSDEEP

768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YY1J+OTOeVf:z6QFElP6n+gKmddpMOtEvwDpj31iet

Score

7^/10

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

Processes:

2024052158e14fa6a4bc5e1abc416863352b3109cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	2024052158e14fa6a4bc5e1abc416863352b3109cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

1680 asih.exe

pid	process
1680	asih.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/2948-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
C:\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral2/memory/2948-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1680-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1680-27-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024052158e14fa6a4bc5e1abc416863352b3109cryptolocker.exe

description	pid	process	target process
PID 2948 wrote to memory of 1680	2948	2024052158e14fa6a4bc5e1abc416863352b3109cryptolocker.exe	asih.exe
PID 2948 wrote to memory of 1680	2948	2024052158e14fa6a4bc5e1abc416863352b3109cryptolocker.exe	asih.exe
PID 2948 wrote to memory of 1680	2948	2024052158e14fa6a4bc5e1abc416863352b3109cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024052158e14fa6a4bc5e1abc416863352b3109cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024052158e14fa6a4bc5e1abc416863352b3109cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2948
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1680

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

Replay Monitor

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Downloads

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

Filesize
53KB

MD5
fabb418358d99b932243f86dc3491bf1

SHA1
f7fa703666f5838f66d65b659a447d942b22c4f6

SHA256
90360b0f0ea3d007ebb27316ddb2e8690fb0989ddb7251dd1304622be888177c

SHA512
55dbf2b7540630378c67d2a6d604cc731ea8aaf54df3afafa0742ff4c366f0fcd11d1412711f09235f66702ef6961de87be24034c246fc9c67d7430fac53b6d4

Download Submit
memory/1680-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1680-20-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/1680-26-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/1680-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2948-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2948-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/2948-2-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/2948-9-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/2948-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download