d7e6940103fdd9a0a7b693b42dd7c15aff312539101c62863a91e4d68ba99117

Analysis

max time kernel
141s
max time network
141s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
31-10-2024 08:24

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General

Target

2024-10-31_4bb7c21f363e30dadc518dd956fc90b5_cryptolocker.exe
Size

37KB
MD5

4bb7c21f363e30dadc518dd956fc90b5
SHA1

c75a52696a835fd453867186461e21158622c7c3
SHA256

d7e6940103fdd9a0a7b693b42dd7c15aff312539101c62863a91e4d68ba99117
SHA512

0722f3b9c84fe55d3f8da4f14e3345e65a44265d1ceb7d95bf61d0771bc063d1d0e61010260413753db385b0458d32fe946ac68843c680bda0049ad135b2b0c1
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITo:qDdFJy3QMOtEvwDpjjWMl7To

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2408	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1652	2024-10-31_4bb7c21f363e30dadc518dd956fc90b5_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1652-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x0007000000012118-11.dat	upx
behavioral1/memory/1652-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2408-26-0x0000000000500000-0x0000000000510000-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	asih.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-10-31_4bb7c21f363e30dadc518dd956fc90b5_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1652 wrote to memory of 2408	1652	2024-10-31_4bb7c21f363e30dadc518dd956fc90b5_cryptolocker.exe	30
PID 1652 wrote to memory of 2408	1652	2024-10-31_4bb7c21f363e30dadc518dd956fc90b5_cryptolocker.exe	30
PID 1652 wrote to memory of 2408	1652	2024-10-31_4bb7c21f363e30dadc518dd956fc90b5_cryptolocker.exe	30
PID 1652 wrote to memory of 2408	1652	2024-10-31_4bb7c21f363e30dadc518dd956fc90b5_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-10-31_4bb7c21f363e30dadc518dd956fc90b5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-31_4bb7c21f363e30dadc518dd956fc90b5_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1652
- 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:2408

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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

\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
38KB

MD5
889381b89a993a33974452fc2a955f76

SHA1
058042224fb31a84256c0df9a4733832fdfc23dc

SHA256
09e6fce9c2a2190ee214f20d365bddecea30af35ad73576a5fac68bd52575d81

SHA512
18d3b3079de8abc1bad4e1a3827256fc11b3793c56bddd98a9db119b7a804d948b72ee847e0d7323c83244857591a435528416496ee6deda014559289b6e9fc9

Download Submit
memory/1652-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1652-2-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download
memory/1652-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1652-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1652-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2408-18-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2408-25-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2408-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download