3ccf7a6b50e36c2b16b389cb46f3e2fc65a5119da4aec6d66d23bb1e7b68db5c

Analysis

max time kernel
148s
max time network
153s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
02-11-2024 06:30

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General

Target

2024-11-02_c67f089319ca9b8244fb7d25ec13f070_cryptolocker.exe
Size

92KB
MD5

c67f089319ca9b8244fb7d25ec13f070
SHA1

3625f68c773c6c0ca5f1c9e7ae43b17436ce8ec2
SHA256

3ccf7a6b50e36c2b16b389cb46f3e2fc65a5119da4aec6d66d23bb1e7b68db5c
SHA512

770d04a8d815c53652ea2b9756091c6f4296a5ed0e666c2f27502c5a14e951650a82fb992553b53ba05d95429cd1edbe86097d388ddc89edc8d6694c747f0f8a
SSDEEP

1536:n6QFElP6n+g9u9cvMOtEvwDpjYYTjipvF2bx1PQAeU:n6a+1SEOtEvwDpjYYvQd2Ph

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

3032 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-11-02_c67f089319ca9b8244fb7d25ec13f070_cryptolocker.exe

pid process

1936 2024-11-02_c67f089319ca9b8244fb7d25ec13f070_cryptolocker.exe

pid	process
3032	asih.exe

pid	process
1936	2024-11-02_c67f089319ca9b8244fb7d25ec13f070_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/1936-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/1936-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/3032-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/3032-27-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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

Processes:

2024-11-02_c67f089319ca9b8244fb7d25ec13f070_cryptolocker.exeasih.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-11-02_c67f089319ca9b8244fb7d25ec13f070_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	asih.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-11-02_c67f089319ca9b8244fb7d25ec13f070_cryptolocker.exe

description	pid	process	target process
PID 1936 wrote to memory of 3032	1936	2024-11-02_c67f089319ca9b8244fb7d25ec13f070_cryptolocker.exe	asih.exe
PID 1936 wrote to memory of 3032	1936	2024-11-02_c67f089319ca9b8244fb7d25ec13f070_cryptolocker.exe	asih.exe
PID 1936 wrote to memory of 3032	1936	2024-11-02_c67f089319ca9b8244fb7d25ec13f070_cryptolocker.exe	asih.exe
PID 1936 wrote to memory of 3032	1936	2024-11-02_c67f089319ca9b8244fb7d25ec13f070_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-11-02_c67f089319ca9b8244fb7d25ec13f070_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-02_c67f089319ca9b8244fb7d25ec13f070_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1936

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:3032

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
92KB

MD5
fb4e586c8a50beb4a4cf39330e2b75f0

SHA1
d1a02baff1f4614df6489fedfb3b5b44f460e0b6

SHA256
f40c48cc1800a84b86bc93bc6b10575556520ca2df6511d8161bb2a05fccd5bf

SHA512
8bf2e8814a0f159be0431e0e41396096e24fef2cdb41695a1e805bca4fe1680b819dae0a7ec56f3b4928a277a0f126160d8d33b1970990869fafb3371a8e50f8

Download Submit
memory/1936-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1936-9-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/1936-2-0x00000000003F0000-0x00000000003F6000-memory.dmp

Filesize
24KB

Download
memory/1936-1-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/1936-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1936-14-0x0000000002A80000-0x0000000002A90000-memory.dmp

Filesize
64KB

Download
memory/3032-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3032-26-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/3032-19-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/3032-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download