da39ab92f70ac880fc8524720821900e7ca5ef473aed0bb71bf635e919ae9d72

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
11-09-2024 18:39

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General

Target

2024-09-11_faf10cfe6c0134beaa077277cfd77ced_cryptolocker.exe
Size

38KB
MD5

faf10cfe6c0134beaa077277cfd77ced
SHA1

73ff0add24f40bde2ff9325e5749e577a5f95852
SHA256

da39ab92f70ac880fc8524720821900e7ca5ef473aed0bb71bf635e919ae9d72
SHA512

731c772cd71e74aae2b7f90e498559ed36bed18c247dc2fba664fd59d8b0ecbab026495c5b933c14e78523115eba3260922a35c69a764bdf0fb0a8713dfe9940
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkIT6k:qDdFJy3QMOtEvwDpjjWMl7T6k

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-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	2024-09-11_faf10cfe6c0134beaa077277cfd77ced_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4684	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/208-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x00090000000233b3-13.dat	upx
behavioral2/memory/208-19-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/4684-27-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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

System Information Discovery
T1082

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	2024-09-11_faf10cfe6c0134beaa077277cfd77ced_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 208 wrote to memory of 4684	208	2024-09-11_faf10cfe6c0134beaa077277cfd77ced_cryptolocker.exe	85
PID 208 wrote to memory of 4684	208	2024-09-11_faf10cfe6c0134beaa077277cfd77ced_cryptolocker.exe	85
PID 208 wrote to memory of 4684	208	2024-09-11_faf10cfe6c0134beaa077277cfd77ced_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-09-11_faf10cfe6c0134beaa077277cfd77ced_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-11_faf10cfe6c0134beaa077277cfd77ced_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:208
- 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:4684

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
38KB

MD5
a04da0620892e40da450f6fd74e43557

SHA1
90c1d11dd20a694320166072af689774d586b778

SHA256
011b92929b72c34eb59d4bdd4977978147de64fc8e02f4b0bd15e28ea9104451

SHA512
25d87f18db76f92e29fec1dfc9233f457bd257565dbd10f43c380dfcdc87298dfae0a5d940c6299435c381b1741ed349d69a4d38db4f55ec713eeca9831afd95

Download Submit
memory/208-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/208-2-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/208-1-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/208-3-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/208-19-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4684-20-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/4684-21-0x0000000000980000-0x0000000000986000-memory.dmp

Filesize
24KB

Download
memory/4684-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download