1d7565cfdeaccb232d01ead3ca90270b5fca2b62675de6526dfdfb9acfc88dae

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
22/05/2024, 05:33

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General

Target

20240521867bca29fccc82d64c46354d7b328113cryptolocker.exe
Size

53KB
MD5

867bca29fccc82d64c46354d7b328113
SHA1

fc39af23f496b38adb849aed63c24b97c72a4f02
SHA256

1d7565cfdeaccb232d01ead3ca90270b5fca2b62675de6526dfdfb9acfc88dae
SHA512

571408615400195789842706b3b3908b0212d14c1de7de98d8d22e18e84d97abef37867fe1eda9c2f74153bde94d728e346a48c4199b6a41266ac9a6d5c1a75d
SSDEEP

768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YY1J+OTOkgu:z6QFElP6n+gKmddpMOtEvwDpj31ikgu

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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	20240521867bca29fccc82d64c46354d7b328113cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1764	asih.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4660-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x00090000000233fd-13.dat	upx
behavioral2/memory/1764-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/4660-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1764-27-0x0000000000500000-0x0000000000510000-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

description	pid	Process	procid_target
PID 4660 wrote to memory of 1764	4660	20240521867bca29fccc82d64c46354d7b328113cryptolocker.exe	82
PID 4660 wrote to memory of 1764	4660	20240521867bca29fccc82d64c46354d7b328113cryptolocker.exe	82
PID 4660 wrote to memory of 1764	4660	20240521867bca29fccc82d64c46354d7b328113cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\20240521867bca29fccc82d64c46354d7b328113cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\20240521867bca29fccc82d64c46354d7b328113cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4660
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1764

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
4a9a9728fc3bd9d7f774f557edf4019d

SHA1
a0d532016fbbe4842e1baa42672f7ac571857ff5

SHA256
ed5b4047fd0c6a5e1efb8c25274b30f57c5d99b7d6cc5640cc7176430f2b7c7f

SHA512
e3afee4f4aa56a2444145567938c234823c83eb4dc1bd1ceac3dfe83d628303bae90332ffe0fcc102285bb88f6800b96004c96a8ff7477c1f806d39ea98fd83c

Download Submit
memory/1764-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1764-20-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/1764-26-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/1764-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4660-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4660-1-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/4660-3-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/4660-9-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/4660-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download