3b2a98512ed7272b5bb4dbd251827dda3316360bd5efa13ffcd9b51e8a6137e0

Analysis

max time kernel
148s
max time network
106s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
31-10-2024 08:11

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General

Target

2024-10-31_ee1c25d5c59b838105092b58f27f79a4_cryptolocker.exe
Size

62KB
MD5

ee1c25d5c59b838105092b58f27f79a4
SHA1

a45d1c8041b49a995fe6984ec5d007caf8793a51
SHA256

3b2a98512ed7272b5bb4dbd251827dda3316360bd5efa13ffcd9b51e8a6137e0
SHA512

710a7d7016b75ec528fd4ff53ff4dac313cdbd2942bbd31b4d0b0a8697b14deb144143d281fef9e008eb9038817d6f948bb8afd53454d5c2062d1c7c9444f83f
SSDEEP

1536:f6QFElP6n+g9u9cvMOtEvwDpjnpVXzRpr:f6a+1SEOtEvwDpjBl

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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	2024-10-31_ee1c25d5c59b838105092b58f27f79a4_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2028	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/5112-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x0008000000023c94-13.dat	upx
behavioral2/memory/5112-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/2028-26-0x0000000000500000-0x0000000000510000-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	2024-10-31_ee1c25d5c59b838105092b58f27f79a4_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 5112 wrote to memory of 2028	5112	2024-10-31_ee1c25d5c59b838105092b58f27f79a4_cryptolocker.exe	86
PID 5112 wrote to memory of 2028	5112	2024-10-31_ee1c25d5c59b838105092b58f27f79a4_cryptolocker.exe	86
PID 5112 wrote to memory of 2028	5112	2024-10-31_ee1c25d5c59b838105092b58f27f79a4_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-10-31_ee1c25d5c59b838105092b58f27f79a4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-31_ee1c25d5c59b838105092b58f27f79a4_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5112
- 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:2028

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\asih.exe

Filesize
62KB

MD5
e85e179f942046ea130ce1792fd70b40

SHA1
20c3eff5a7127957a0c27e29b5d3700dc15e3156

SHA256
8d851359c1a4c8383451f117cc4fdafbc4b1980d8ab5d4a927516a188d3957e9

SHA512
d111d5306470a44c3726d6c1140e0132df1a249868e17a373e593e83a8b5f8da2f8cd11349a915b25d72b5acf586a3a4501d734ecfb678b294e037740fcd141c

Download Submit
memory/2028-20-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/2028-19-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2028-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/5112-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/5112-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/5112-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/5112-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/5112-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download