043ae25272d703c92ddd18e33fd74f10d144b90690368041e2af0d3311c799e3

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
04/01/2024, 15:13

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General

Target

2024-01-03_1509c8b0d36cb88c928b303053f3bfd2_cryptolocker.exe
Size

31KB
MD5

1509c8b0d36cb88c928b303053f3bfd2
SHA1

18ca2dbf299853522d1e8824f6b92030b4baa266
SHA256

043ae25272d703c92ddd18e33fd74f10d144b90690368041e2af0d3311c799e3
SHA512

47fc86245f3c46d970861dbc5387ce9f88997c0ca995d9370e6fb94bdeec1ee0f62d38ceaa0c43a8dd0f63c25e105e0ae37ec974227ac7ab1447ac8e29c4eda1
SSDEEP

768:qUmnjFom/kLyMro2GtOOtEvwDpjeMLam5a1:qUmnpomddpMOtEvwDpjjaYa1

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2140	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
3000	2024-01-03_1509c8b0d36cb88c928b303053f3bfd2_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/3000-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x000a000000012232-11.dat	upx
behavioral1/memory/3000-15-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2140-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2140-27-0x0000000000500000-0x000000000050F000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3000 wrote to memory of 2140	3000	2024-01-03_1509c8b0d36cb88c928b303053f3bfd2_cryptolocker.exe	28
PID 3000 wrote to memory of 2140	3000	2024-01-03_1509c8b0d36cb88c928b303053f3bfd2_cryptolocker.exe	28
PID 3000 wrote to memory of 2140	3000	2024-01-03_1509c8b0d36cb88c928b303053f3bfd2_cryptolocker.exe	28
PID 3000 wrote to memory of 2140	3000	2024-01-03_1509c8b0d36cb88c928b303053f3bfd2_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-03_1509c8b0d36cb88c928b303053f3bfd2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-03_1509c8b0d36cb88c928b303053f3bfd2_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3000
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2140

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
31KB

MD5
353ab565404d59ff985e84c3b64491d3

SHA1
4b59c56b12b4708c48ddf164dfa4f40307d7258f

SHA256
0af426cadf3c3030def617a7c6c86e3309b4e7c61f97a56ed7c78260dcc88493

SHA512
951abab6fe8bc138436620cb8047ab2a82199a90a83f08f02277b871a7b611d286bdd4aea6c01f510c83b1e99c6e21b28abf4c70879e085e7f84f233574d25a1

Download Submit
memory/2140-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2140-19-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2140-26-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2140-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3000-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3000-1-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/3000-2-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/3000-3-0x0000000000450000-0x0000000000456000-memory.dmp

Filesize
24KB

Download
memory/3000-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3000-16-0x0000000002400000-0x000000000240F000-memory.dmp

Filesize
60KB

Download
memory/3000-29-0x0000000002400000-0x000000000240F000-memory.dmp

Filesize
60KB

Download