a594bbda69d45c7b367afe06a1ed880f96bc13b2ed49418a02c947a0f6239a9f

Analysis

max time kernel
150s
max time network
147s
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, 02:28

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General

Target

2024-09-19_c43b5f5b742a332e91f9b89088351a2c_cryptolocker.exe
Size

45KB
MD5

c43b5f5b742a332e91f9b89088351a2c
SHA1

05b00635133054ba071da0cd6740693ad62ca012
SHA256

a594bbda69d45c7b367afe06a1ed880f96bc13b2ed49418a02c947a0f6239a9f
SHA512

67f9d82dee3be40fd49b2795cddbb8e20957f8a594b5a232c5273fa71e409170a3caf2c81530feac04253c05e253748286829fe4c34115a71d1e41359babaf55
SSDEEP

768:bODOw9UiamWUB2preAr+OfjH/0STX73OBqa:bODOw9acifH+Ya

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-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation	2024-09-19_c43b5f5b742a332e91f9b89088351a2c_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4784	lossy.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4036-0-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral2/files/0x000900000002340b-13.dat	upx
behavioral2/memory/4036-17-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral2/memory/4784-26-0x0000000008000000-0x000000000800F000-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_c43b5f5b742a332e91f9b89088351a2c_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	lossy.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4036 wrote to memory of 4784	4036	2024-09-19_c43b5f5b742a332e91f9b89088351a2c_cryptolocker.exe	82
PID 4036 wrote to memory of 4784	4036	2024-09-19_c43b5f5b742a332e91f9b89088351a2c_cryptolocker.exe	82
PID 4036 wrote to memory of 4784	4036	2024-09-19_c43b5f5b742a332e91f9b89088351a2c_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-09-19_c43b5f5b742a332e91f9b89088351a2c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-19_c43b5f5b742a332e91f9b89088351a2c_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4036
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:4784

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\lossy.exe

Filesize
45KB

MD5
7c78171085547d01c197f860e85fb4fe

SHA1
3dd532c913d5c8cb63cd30f66c108c6463b490d2

SHA256
3294309c8fbfd7ebcc32f0b9e54eb4004a7c8d556c9a726ba4691af6937c9d83

SHA512
2f97c90cbc769dd182be092515a563b2337b5f5ac4301ffaf279ccc93ba85fa179d18291036316b82ba37517c87c33b827b40e2b6418cfd744a12bbb4f3d5d06

Download Submit
memory/4036-0-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/4036-1-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/4036-2-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/4036-3-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/4036-17-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/4784-19-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4784-20-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/4784-26-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download