8efdb20ce0c634ec9e5423f63e509734144c1b38eebca767181b9aaa32fff7df

Analysis

max time kernel
150s
max time network
151s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
08/04/2024, 20:29

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General

Target

2024-04-08_6678c103a8b17a22be879b5cc8db29fb_cryptolocker.exe
Size

63KB
MD5

6678c103a8b17a22be879b5cc8db29fb
SHA1

0fecfd195045bafbb445c20503af1f79f72c4963
SHA256

8efdb20ce0c634ec9e5423f63e509734144c1b38eebca767181b9aaa32fff7df
SHA512

0a100f94d7e3f518469eb47630f6a5ff49cd0222170aacdcc4f3012b09710d1be9d62e0f78557337a51e9606e33ed7e6a090b4f26fb40c2e0b444762482ef54f
SSDEEP

768:zQz7yVEhs9+syJP6ntOOtEvwDpjFelaB7yBEY9Su8F5mLZ5ScC:zj+soPSMOtEvwDpj4kpmeLmLC

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2220-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c000000012306-11.dat	CryptoLocker_rule2
behavioral1/memory/2220-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2524-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2524-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2220-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c000000012306-11.dat	CryptoLocker_set1
behavioral1/memory/2220-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2524-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2524-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2220-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000c000000012306-11.dat	UPX
behavioral1/memory/2220-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2524-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2524-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2524	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2220	2024-04-08_6678c103a8b17a22be879b5cc8db29fb_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2220-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000c000000012306-11.dat	upx
behavioral1/memory/2220-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2524-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2524-26-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2220 wrote to memory of 2524	2220	2024-04-08_6678c103a8b17a22be879b5cc8db29fb_cryptolocker.exe	28
PID 2220 wrote to memory of 2524	2220	2024-04-08_6678c103a8b17a22be879b5cc8db29fb_cryptolocker.exe	28
PID 2220 wrote to memory of 2524	2220	2024-04-08_6678c103a8b17a22be879b5cc8db29fb_cryptolocker.exe	28
PID 2220 wrote to memory of 2524	2220	2024-04-08_6678c103a8b17a22be879b5cc8db29fb_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-08_6678c103a8b17a22be879b5cc8db29fb_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-08_6678c103a8b17a22be879b5cc8db29fb_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2220
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2524

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\misid.exe

Filesize
63KB

MD5
65ea4c16e75845b7ec39e757ba821e5a

SHA1
d27cd9568839b94f8de5097628db992af2aea413

SHA256
d20507c1b85589da22effef099d94bd8827abb18c2f68a4da459ce298a2d40d3

SHA512
c457077fc840c216d291e5fa62cf46442ab09dfa55481d05f97d9f13b69faaf600c0632fbb2aea131654574f743cd53d96665aac4775652397a30bb8b1e25d49

Download Submit
memory/2220-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2220-1-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2220-2-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/2220-9-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2220-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2524-18-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2524-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2524-20-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2524-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download