3ea58915359aa61877d71ccfbc5df9f8bea50ca4beca7a0f4ad49dff0086986a

Analysis

max time kernel
178s
max time network
191s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
05/01/2024, 05:48

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General

Target

2024-01-01_aac2c540f13f84bc23677cc08912d933_cryptolocker.exe
Size

99KB
MD5

aac2c540f13f84bc23677cc08912d933
SHA1

0df30ff4803033a970516dee077d7ad2d70750dd
SHA256

3ea58915359aa61877d71ccfbc5df9f8bea50ca4beca7a0f4ad49dff0086986a
SHA512

215d49fa6d3017b360a3a6f98de80b2b26351b53f2e7bd4b3811529436526c8a4874f7748d4284e7c95e6b0f464ed7183366eeb04610ad08cba174ebfd6fdfb1
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgpwqWsviP1o:AnBdOOtEvwDpj6zo

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\International\Geo\Nation	2024-01-01_aac2c540f13f84bc23677cc08912d933_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4412	asih.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2888-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x000800000001e712-13.dat	upx
behavioral2/memory/4412-18-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/2888-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/4412-27-0x0000000000500000-0x000000000050F000-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

description	pid	Process	procid_target
PID 2888 wrote to memory of 4412	2888	2024-01-01_aac2c540f13f84bc23677cc08912d933_cryptolocker.exe	91
PID 2888 wrote to memory of 4412	2888	2024-01-01_aac2c540f13f84bc23677cc08912d933_cryptolocker.exe	91
PID 2888 wrote to memory of 4412	2888	2024-01-01_aac2c540f13f84bc23677cc08912d933_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-01-01_aac2c540f13f84bc23677cc08912d933_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-01_aac2c540f13f84bc23677cc08912d933_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2888
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4412

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
99KB

MD5
adaaee6c9f758ac23df80f5affc50d43

SHA1
2df0313585bb86a36b4cf4b8e77113798b40adda

SHA256
8dd40c49ada2169bb6ea45fd580e09b941b1a5b6c45223875044d49cb5d66550

SHA512
a4989a5b4568ec7d45e7e9b35e91e3137dcb063800b8651c7a7b3ac3b5c22d8e2d755c13253ea3fdbde0d562cfabd5383275b226818de5355db301df2cb86224

Download Submit
memory/2888-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2888-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/2888-2-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/2888-3-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/2888-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4412-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4412-20-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/4412-22-0x00000000007C0000-0x00000000007C6000-memory.dmp

Filesize
24KB

Download
memory/4412-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download