5e35261cfafefc485f49b4dd5b7d014db1c806ae139056199167498a2dcc2cfd

Analysis

max time kernel
142s
max time network
151s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
09/01/2024, 06:44

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General

Target

2024-01-08_8b1a8c758a6b801bab6f35f9bfda76ba_cryptolocker.exe
Size

101KB
MD5

8b1a8c758a6b801bab6f35f9bfda76ba
SHA1

48f06395e5c1a497210edd348d027eb912dc7c60
SHA256

5e35261cfafefc485f49b4dd5b7d014db1c806ae139056199167498a2dcc2cfd
SHA512

475a11a4259d34747847663e103b81da0046c6e8e632530fde016bf9ead365f38d5bcb85a56d09ef8353350bbed0f21fd9f8dac02809f68594c79a947503b380
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgpwqWsviP1Y:AnBdOOtEvwDpj6zY

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2728	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1444	2024-01-08_8b1a8c758a6b801bab6f35f9bfda76ba_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1444-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x000e0000000122f0-14.dat	upx
behavioral1/memory/2728-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/1444-15-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2728-26-0x0000000000500000-0x000000000050F000-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 1444 wrote to memory of 2728	1444	2024-01-08_8b1a8c758a6b801bab6f35f9bfda76ba_cryptolocker.exe	28
PID 1444 wrote to memory of 2728	1444	2024-01-08_8b1a8c758a6b801bab6f35f9bfda76ba_cryptolocker.exe	28
PID 1444 wrote to memory of 2728	1444	2024-01-08_8b1a8c758a6b801bab6f35f9bfda76ba_cryptolocker.exe	28
PID 1444 wrote to memory of 2728	1444	2024-01-08_8b1a8c758a6b801bab6f35f9bfda76ba_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-08_8b1a8c758a6b801bab6f35f9bfda76ba_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-08_8b1a8c758a6b801bab6f35f9bfda76ba_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1444
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2728

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

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

Filesize
101KB

MD5
dd2455b88c26698f6f6052546b346eac

SHA1
6b03d5d915b124c22d9cef08350540776b4fa923

SHA256
dd2594a9541552e76142407cdb198a41cc5332e60d0e3c82a141ebd4f0a473eb

SHA512
0feb478851a0e8e01fa318605db3a51b3931dc0976e3c218c395320ac816f06baca379e45bf8857c423b9f5982a2eeaf548dd2c62cc6fe2592c43236e8153cff

Download Submit
memory/1444-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1444-1-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/1444-3-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/1444-2-0x0000000000450000-0x0000000000456000-memory.dmp

Filesize
24KB

Download
memory/1444-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2728-18-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2728-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2728-19-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2728-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download