3834ec8b0af3e948740f755ba414c66445e8ca2fb881d25f2342839e284c245a

Analysis

max time kernel
149s
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
05-09-2024 12:31

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General

Target

2024-09-05_5c2c409be8d1346ba42415178dc1f0be_cryptolocker.exe
Size

62KB
MD5

5c2c409be8d1346ba42415178dc1f0be
SHA1

18f057d5a681c51bf62605fbc0e2178f36b38e76
SHA256

3834ec8b0af3e948740f755ba414c66445e8ca2fb881d25f2342839e284c245a
SHA512

ff8f4968aba398204ef31a3c9ed513bdc0fe24244eb4de72c3fc2e26559cbc81f8dde70e18b8dbbb439e36da182a60bcbb41093fd3cdc433628ae87e054025c2
SSDEEP

768:T6LsoEEeegiZPvEhHSG+gkum/kLyMro2GtOOtEvwDpjhXMLam5axK38noysR:T6QFElP6n+gxmddpMOtEvwDpjwaYaQ8g

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	2024-09-05_5c2c409be8d1346ba42415178dc1f0be_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4464	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1400-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x0008000000023415-13.dat	upx
behavioral2/memory/1400-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/4464-26-0x0000000000500000-0x0000000000510000-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	2024-09-05_5c2c409be8d1346ba42415178dc1f0be_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 1400 wrote to memory of 4464	1400	2024-09-05_5c2c409be8d1346ba42415178dc1f0be_cryptolocker.exe	84
PID 1400 wrote to memory of 4464	1400	2024-09-05_5c2c409be8d1346ba42415178dc1f0be_cryptolocker.exe	84
PID 1400 wrote to memory of 4464	1400	2024-09-05_5c2c409be8d1346ba42415178dc1f0be_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-09-05_5c2c409be8d1346ba42415178dc1f0be_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-05_5c2c409be8d1346ba42415178dc1f0be_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1400
- 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:4464

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
a4c3317100c3e50dd6295e4f1a86dc36

SHA1
42e9c9f39a5991cff1488a9a4b246adc11aba21f

SHA256
7d0f7c8247616b68609e0ba53f8ea3427d947ae5ef2646ee76c05585f28a2089

SHA512
0342a75071fa531ea8e2a7410901c10c1ecd11795de47fe4f8579231f26eba45e86597e98fafed1a4f425a2fc1f261ee21acde8926543480f096533793bbcc2e

Download Submit
memory/1400-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1400-2-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download
memory/1400-1-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download
memory/1400-3-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/1400-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4464-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4464-19-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/4464-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download