df35d39d4dfdb18ad29afb257ef431915648bde05abc50ddd8fd181727da9659

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
19/09/2024, 03:37

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General

Target

2024-09-19_b31979069035de858da313415aa7f505_cryptolocker.exe
Size

92KB
MD5

b31979069035de858da313415aa7f505
SHA1

7fd88dafb70194f1ef169e75ad30529347fced34
SHA256

df35d39d4dfdb18ad29afb257ef431915648bde05abc50ddd8fd181727da9659
SHA512

ceaebb8d73772b55e58dff0b3de48962e91385f01f1b90b3cea5d7c2df60999109896795ef00fcacf1931c86a96242a1a732dcf8186fd6fa8d05c2058a0d3bd2
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwMgddP:AnBdOOtEvwDpj6zL

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-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	2024-09-19_b31979069035de858da313415aa7f505_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5028	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1336-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x0009000000023489-13.dat	upx
behavioral2/memory/1336-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/5028-27-0x0000000000500000-0x000000000050F000-memory.dmp	upx

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

System Information Discovery
T1082

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	2024-09-19_b31979069035de858da313415aa7f505_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 1336 wrote to memory of 5028	1336	2024-09-19_b31979069035de858da313415aa7f505_cryptolocker.exe	82
PID 1336 wrote to memory of 5028	1336	2024-09-19_b31979069035de858da313415aa7f505_cryptolocker.exe	82
PID 1336 wrote to memory of 5028	1336	2024-09-19_b31979069035de858da313415aa7f505_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-09-19_b31979069035de858da313415aa7f505_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-19_b31979069035de858da313415aa7f505_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1336
- 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:5028

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
92KB

MD5
799dfe0ef29fdacbc097ffc132dae522

SHA1
fecabf6a75cc776d2a701f60efa5899c73e68501

SHA256
e428198f882fe73143c78bc8d4b574b660a9371862e7efb4a0af2e93ca2a2c4c

SHA512
05280dd2e51c715d567e38ad2617f4759f8680d734f6e1a14cf5101d56b16afa909d382a42f2e5b6dd6f7a897dd466856c4935528326d74a20244dc311ce7b1c

Download Submit
memory/1336-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1336-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1336-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1336-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1336-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/5028-21-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/5028-20-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/5028-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download