27b488af691a578c184ba878dc4158a32fa094a8f1d655a7dca8ab708d9e165a

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
19/08/2023, 14:16

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General

Target

439b92ca637d1b9533c984454da6325c_cryptolocker_JC.exe
Size

85KB
MD5

439b92ca637d1b9533c984454da6325c
SHA1

a2865b9ff93656dd26974f3350536ad23227a327
SHA256

27b488af691a578c184ba878dc4158a32fa094a8f1d655a7dca8ab708d9e165a
SHA512

0de044cb9ebb6e64e4230e63fbcc01497f8ffc060f067570a87c3c467d0be93c271e26e7f4620151199714942395b53e24268e3084e2a2226fe7e2d1389f2e0d
SSDEEP

768:qkmnjFom/kLyMro2GtOOtEvwDpjeY10Y/YMsvlMdwPK80GQuG0utZH5:qkmnpomddpMOtEvwDpjJGYQbN/PKwNC5

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2152	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2604	439b92ca637d1b9533c984454da6325c_cryptolocker_JC.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2604-53-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x0008000000012023-64.dat	upx
behavioral1/memory/2152-70-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x0008000000012023-69.dat	upx
behavioral1/memory/2604-68-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x0008000000012023-78.dat	upx
behavioral1/memory/2152-79-0x0000000000500000-0x000000000050F000-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 2604 wrote to memory of 2152	2604	439b92ca637d1b9533c984454da6325c_cryptolocker_JC.exe	28
PID 2604 wrote to memory of 2152	2604	439b92ca637d1b9533c984454da6325c_cryptolocker_JC.exe	28
PID 2604 wrote to memory of 2152	2604	439b92ca637d1b9533c984454da6325c_cryptolocker_JC.exe	28
PID 2604 wrote to memory of 2152	2604	439b92ca637d1b9533c984454da6325c_cryptolocker_JC.exe	28

C:\Users\Admin\AppData\Local\Temp\439b92ca637d1b9533c984454da6325c_cryptolocker_JC.exe
"C:\Users\Admin\AppData\Local\Temp\439b92ca637d1b9533c984454da6325c_cryptolocker_JC.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2604
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2152

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
85KB

MD5
ef4fe20e26c58f809430351b9b233e68

SHA1
5ca809222a48e105e00bca1335d89c8cbe007383

SHA256
b00766b3583bc4654f47211749a966e54a60714ce529957fd9966e8cfde2d958

SHA512
a2800ddea6e708e71638f0eba62644e6d097a3905f3d5d3065a3fa442126bdc0aa8b4dffbd3a0b2acd7643595d65d436fd0e2c25594d28b58843479a9b988909

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

Filesize
85KB

MD5
ef4fe20e26c58f809430351b9b233e68

SHA1
5ca809222a48e105e00bca1335d89c8cbe007383

SHA256
b00766b3583bc4654f47211749a966e54a60714ce529957fd9966e8cfde2d958

SHA512
a2800ddea6e708e71638f0eba62644e6d097a3905f3d5d3065a3fa442126bdc0aa8b4dffbd3a0b2acd7643595d65d436fd0e2c25594d28b58843479a9b988909

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

Filesize
85KB

MD5
ef4fe20e26c58f809430351b9b233e68

SHA1
5ca809222a48e105e00bca1335d89c8cbe007383

SHA256
b00766b3583bc4654f47211749a966e54a60714ce529957fd9966e8cfde2d958

SHA512
a2800ddea6e708e71638f0eba62644e6d097a3905f3d5d3065a3fa442126bdc0aa8b4dffbd3a0b2acd7643595d65d436fd0e2c25594d28b58843479a9b988909

Download Submit
memory/2152-70-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2152-79-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2604-53-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2604-54-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2604-55-0x0000000000200000-0x0000000000206000-memory.dmp

Filesize
24KB

Download
memory/2604-57-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2604-66-0x00000000024C0000-0x00000000024CF000-memory.dmp

Filesize
60KB

Download
memory/2604-68-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download