77610d5914d8c68ae7bb5df109a79d722d3c28310319da08598ff898b02b9595

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
12/10/2024, 03:19

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General

Target

2024-10-12_e555904f43c03804dc920621ed2aef58_cryptolocker.exe
Size

91KB
MD5

e555904f43c03804dc920621ed2aef58
SHA1

702e580f28e52d9432126dcd5bf72e7db9865724
SHA256

77610d5914d8c68ae7bb5df109a79d722d3c28310319da08598ff898b02b9595
SHA512

f5060b7af84b15d6e487686768d520f5f1c8fe63efeece44a9afb8c5b92c6a6bf1327320a76f77a3b124d90cd60df9bad1ad0ce5f02e2ce99734604c2e3482e2
SSDEEP

1536:n6QFElP6n+g9u9cvMOtEvwDpjYYTjipvF2bx1PQAA/V:n6a+1SEOtEvwDpjYYvQd2Pe

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2640	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1392	2024-10-12_e555904f43c03804dc920621ed2aef58_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1392-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000a000000012033-11.dat	upx
behavioral1/memory/2640-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1392-25-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2640-26-0x0000000000500000-0x0000000000510000-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	2024-10-12_e555904f43c03804dc920621ed2aef58_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 1392 wrote to memory of 2640	1392	2024-10-12_e555904f43c03804dc920621ed2aef58_cryptolocker.exe	28
PID 1392 wrote to memory of 2640	1392	2024-10-12_e555904f43c03804dc920621ed2aef58_cryptolocker.exe	28
PID 1392 wrote to memory of 2640	1392	2024-10-12_e555904f43c03804dc920621ed2aef58_cryptolocker.exe	28
PID 1392 wrote to memory of 2640	1392	2024-10-12_e555904f43c03804dc920621ed2aef58_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-10-12_e555904f43c03804dc920621ed2aef58_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-12_e555904f43c03804dc920621ed2aef58_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1392
- 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:2640

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
91KB

MD5
27ab23961392b7809f4295e07c90bc58

SHA1
7adc137aa9cb7e8b1e9ec0e1ac2667701d4e860a

SHA256
ce93ff6fecf86a67c4c5bed79c4cfae324b34807c31373452f9c806d09840fa7

SHA512
cbc610fa81dbe6201fa96b2ce3767c33281c71b64275e9ce3d576170443529316d9aa57d9112c9c50cdb2db052aa1fbaa37f7324dc57df477c97a48c5be1195f

Download Submit
memory/1392-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1392-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1392-2-0x0000000000530000-0x0000000000536000-memory.dmp

Filesize
24KB

Download
memory/1392-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1392-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2640-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2640-17-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2640-18-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2640-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download