05aef95572c7c75517d2f83338840893452498c30e562613628d6d8a12da8d5e

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
02/10/2024, 02:54

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General

Target

2024-10-02_bb83d886476e23098e8d166f2fab8743_cryptolocker.exe
Size

89KB
MD5

bb83d886476e23098e8d166f2fab8743
SHA1

4645f2255fd52bfb0c9f42b8493e6eec35001187
SHA256

05aef95572c7c75517d2f83338840893452498c30e562613628d6d8a12da8d5e
SHA512

543415eb890387f41b92de486ebc7def0c8b1fb9db8921161c936ad1d8194491bee47e000a85052ba997f74fac1a1f22e64db043250185bd2aacb5d11f1645cd
SSDEEP

768:qkmnjFom/kLyMro2GtOOtEvwDpjeY10Y/YMsvlMdwPK80GQuchoIgtIODw1j:qkmnpomddpMOtEvwDpjJGYQbN/PKwMg4

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2920	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2652	2024-10-02_bb83d886476e23098e8d166f2fab8743_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2652-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x0063000000011c27-11.dat	upx
behavioral1/memory/2920-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2652-16-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2920-27-0x0000000000500000-0x000000000050F000-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	2024-10-02_bb83d886476e23098e8d166f2fab8743_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	asih.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2652 wrote to memory of 2920	2652	2024-10-02_bb83d886476e23098e8d166f2fab8743_cryptolocker.exe	30
PID 2652 wrote to memory of 2920	2652	2024-10-02_bb83d886476e23098e8d166f2fab8743_cryptolocker.exe	30
PID 2652 wrote to memory of 2920	2652	2024-10-02_bb83d886476e23098e8d166f2fab8743_cryptolocker.exe	30
PID 2652 wrote to memory of 2920	2652	2024-10-02_bb83d886476e23098e8d166f2fab8743_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-10-02_bb83d886476e23098e8d166f2fab8743_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-02_bb83d886476e23098e8d166f2fab8743_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2652
- 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:2920

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

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Downloads

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

Filesize
90KB

MD5
fad44508be1a63dca74a8cf6379dbdfa

SHA1
1d94570104bcf0546155df504ad0d1c86f93c7f3

SHA256
99d60bf9b4394cbf0176109a4f688098bd6b14fcdf244a5b299f427434596ef1

SHA512
c92f68aa0e71189da093ab62631c1994214c9e451cea20ecbf019d19196efc6f48a320a4bc38e692621794f11c12206b75cdf582aa1914cbb6acdcad1cc66e07

Download Submit
memory/2652-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2652-1-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2652-2-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2652-9-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2652-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2920-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2920-19-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2920-26-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2920-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download