962f7e55d2766cbd9388f36344c7b59eabe54800947d88f1cab66f2e83b571f2

Analysis

max time kernel
148s
max time network
153s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
21/11/2024, 06:49

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General

Target

2024-11-21_66a37ebfbf6e3b49f19d4797d3ce32fb_cryptolocker.exe
Size

92KB
MD5

66a37ebfbf6e3b49f19d4797d3ce32fb
SHA1

6f61cce45bfd664959294e075ed5d9c5614e4689
SHA256

962f7e55d2766cbd9388f36344c7b59eabe54800947d88f1cab66f2e83b571f2
SHA512

a9af32421f55574639e8e8ae1ace2ad69de4128912030c825af5d03d455b40d42cec467dca114117a7a1de01a300c28e1faeecdf29258343921f95f4df794e9f
SSDEEP

1536:f6QFElP6n+g9u9cvMOtEvwDpjYYTjipvF2bx1PQApI0k:f6a+1SEOtEvwDpjYYvQd2P0

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1224	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1736	2024-11-21_66a37ebfbf6e3b49f19d4797d3ce32fb_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1736-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000c000000012266-14.dat	upx
behavioral1/memory/1736-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1224-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1224-26-0x0000000000500000-0x0000000000510000-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	2024-11-21_66a37ebfbf6e3b49f19d4797d3ce32fb_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1736 wrote to memory of 1224	1736	2024-11-21_66a37ebfbf6e3b49f19d4797d3ce32fb_cryptolocker.exe	30
PID 1736 wrote to memory of 1224	1736	2024-11-21_66a37ebfbf6e3b49f19d4797d3ce32fb_cryptolocker.exe	30
PID 1736 wrote to memory of 1224	1736	2024-11-21_66a37ebfbf6e3b49f19d4797d3ce32fb_cryptolocker.exe	30
PID 1736 wrote to memory of 1224	1736	2024-11-21_66a37ebfbf6e3b49f19d4797d3ce32fb_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-11-21_66a37ebfbf6e3b49f19d4797d3ce32fb_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-21_66a37ebfbf6e3b49f19d4797d3ce32fb_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1736
- 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:1224

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

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

Filesize
93KB

MD5
9148076ab31af3cd684cd11f48e5ef3b

SHA1
2f09745582a1a3e00487df1100bcc366b14c6a6a

SHA256
9ef97f14e0ad5262db021bff4db848213015925b25e719f21316259d3b0b7695

SHA512
ac590d5f4575b0546efe0477a9606c4fa418dd451fccccafe9bdb42f4aa1f56ca3e7b73e12f1d42b90402f8a528597f48277c107cb1557b5f7f0e7b2d95acf8e

Download Submit
memory/1224-18-0x0000000000430000-0x0000000000436000-memory.dmp

Filesize
24KB

Download
memory/1224-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1224-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1736-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1736-3-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/1736-2-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/1736-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1736-1-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download