0a54e20eec22278515036fdc4f3d95b60f13730d47d4340dcca137af87a42b60

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
02/10/2023, 20:20

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General

Target

2023-08-27_665f8175a73d7bb1a4ec523fe0f33982_cryptolocker_JC.exe
Size

67KB
MD5

665f8175a73d7bb1a4ec523fe0f33982
SHA1

405e6502be531a0e81b7d463e3a467aaace102b3
SHA256

0a54e20eec22278515036fdc4f3d95b60f13730d47d4340dcca137af87a42b60
SHA512

f08e3e17e6f4c82145763a3406fc274d6c650c8f109549506227568c9361d434772d3651a561d359cb828eacaa6a9abf7fe5ba8fb4fb0b836d8156986cb79d5a
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjIHsal+:1nK6a+qdOOtEvwDpjz

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2656	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2808	2023-08-27_665f8175a73d7bb1a4ec523fe0f33982_cryptolocker_JC.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2808-0-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/files/0x00070000000120e4-11.dat	upx
behavioral1/memory/2808-13-0x0000000002800000-0x0000000002810000-memory.dmp	upx
behavioral1/files/0x00070000000120e4-16.dat	upx
behavioral1/memory/2808-15-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/2656-17-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/files/0x00070000000120e4-25.dat	upx
behavioral1/memory/2656-26-0x0000000000500000-0x000000000050F311-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 2808 wrote to memory of 2656	2808	2023-08-27_665f8175a73d7bb1a4ec523fe0f33982_cryptolocker_JC.exe	28
PID 2808 wrote to memory of 2656	2808	2023-08-27_665f8175a73d7bb1a4ec523fe0f33982_cryptolocker_JC.exe	28
PID 2808 wrote to memory of 2656	2808	2023-08-27_665f8175a73d7bb1a4ec523fe0f33982_cryptolocker_JC.exe	28
PID 2808 wrote to memory of 2656	2808	2023-08-27_665f8175a73d7bb1a4ec523fe0f33982_cryptolocker_JC.exe	28

C:\Users\Admin\AppData\Local\Temp\2023-08-27_665f8175a73d7bb1a4ec523fe0f33982_cryptolocker_JC.exe
"C:\Users\Admin\AppData\Local\Temp\2023-08-27_665f8175a73d7bb1a4ec523fe0f33982_cryptolocker_JC.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2808
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2656

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
67KB

MD5
4db6853ea4fe1244974b62ec814719f3

SHA1
26a6bf51367fdefd9d1bf856e52b741bf507487f

SHA256
e26c1432fb772a82d88a2cb3665b26c24db07f968d471d6546b27c9a79d563ce

SHA512
d8fcc7a019462b22b6355a935bc58c7eeee75bd38085b0193d985804cbd111690932df50b9f21fc0bfc92d3222b3521adb880503378bc7844fcea1cb12820a9e

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

Filesize
67KB

MD5
4db6853ea4fe1244974b62ec814719f3

SHA1
26a6bf51367fdefd9d1bf856e52b741bf507487f

SHA256
e26c1432fb772a82d88a2cb3665b26c24db07f968d471d6546b27c9a79d563ce

SHA512
d8fcc7a019462b22b6355a935bc58c7eeee75bd38085b0193d985804cbd111690932df50b9f21fc0bfc92d3222b3521adb880503378bc7844fcea1cb12820a9e

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

Filesize
67KB

MD5
4db6853ea4fe1244974b62ec814719f3

SHA1
26a6bf51367fdefd9d1bf856e52b741bf507487f

SHA256
e26c1432fb772a82d88a2cb3665b26c24db07f968d471d6546b27c9a79d563ce

SHA512
d8fcc7a019462b22b6355a935bc58c7eeee75bd38085b0193d985804cbd111690932df50b9f21fc0bfc92d3222b3521adb880503378bc7844fcea1cb12820a9e

Download Submit
memory/2656-17-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2656-19-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2656-26-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2808-0-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2808-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2808-2-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2808-3-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2808-13-0x0000000002800000-0x0000000002810000-memory.dmp

Filesize
64KB

Download
memory/2808-15-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download