f243dfd9b8e06e46b403414293555faf3b531467aab57c9e22cb41c970df1b23

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
30/04/2024, 04:46

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-04-30_4c5c0997d641bfcf166b3c84308e77a9_cryptolocker.exe
Size

80KB
MD5

4c5c0997d641bfcf166b3c84308e77a9
SHA1

6f942981bfadb9f18f5b8bef0583875409588bcf
SHA256

f243dfd9b8e06e46b403414293555faf3b531467aab57c9e22cb41c970df1b23
SHA512

ada4aa9d3add42f2bfd978af1bb896085716d3acee1b94c918f1993b71d83c57ce7104e9fc9d847fe61ae17367088d5bb62fc3ce0ed5e757b7e8ecd9251b4a10
SSDEEP

1536:zj+soPSMOtEvwDpj4ktBl01hJ0tq1ky7Qp:zCsanOtEvwDpj9

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1796-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000e000000013420-11.dat	CryptoLocker_rule2
behavioral1/memory/1796-12-0x00000000024A0000-0x00000000024B0000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1796-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2268-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/1796-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000e000000013420-11.dat	CryptoLocker_set1
behavioral1/memory/1796-12-0x00000000024A0000-0x00000000024B0000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1796-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2268-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/1796-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000e000000013420-11.dat	UPX
behavioral1/memory/1796-12-0x00000000024A0000-0x00000000024B0000-memory.dmp	UPX
behavioral1/memory/1796-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2268-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2268	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
1796	2024-04-30_4c5c0997d641bfcf166b3c84308e77a9_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1796-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000e000000013420-11.dat	upx
behavioral1/memory/1796-12-0x00000000024A0000-0x00000000024B0000-memory.dmp	upx
behavioral1/memory/1796-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2268-26-0x0000000000500000-0x0000000000510000-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 1796 wrote to memory of 2268	1796	2024-04-30_4c5c0997d641bfcf166b3c84308e77a9_cryptolocker.exe	28
PID 1796 wrote to memory of 2268	1796	2024-04-30_4c5c0997d641bfcf166b3c84308e77a9_cryptolocker.exe	28
PID 1796 wrote to memory of 2268	1796	2024-04-30_4c5c0997d641bfcf166b3c84308e77a9_cryptolocker.exe	28
PID 1796 wrote to memory of 2268	1796	2024-04-30_4c5c0997d641bfcf166b3c84308e77a9_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-30_4c5c0997d641bfcf166b3c84308e77a9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-30_4c5c0997d641bfcf166b3c84308e77a9_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1796
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2268

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

Loading Replay Monitor...

Downloads

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

Filesize
80KB

MD5
eb6431918cf6ee62f3e2c5f7d42092e7

SHA1
4ab4c5bea1eda0db59f090129f631dfe0f3c5e88

SHA256
a02c2448c5c33c08e2d0647a714485bf759b2ac0666b76db26c744a928cdd78f

SHA512
5090e2ce4dd99e62f07af9ef92b5343bc1a7ee298df82fa611cc768d4fdca13368f657c86cfaed5d60743bacbca50bc513dd65bde65fd35ed17ade3c08d070c4

Download Submit
memory/1796-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1796-2-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/1796-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1796-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1796-12-0x00000000024A0000-0x00000000024B0000-memory.dmp

Filesize
64KB

Download
memory/1796-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2268-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2268-25-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2268-18-0x00000000004B0000-0x00000000004B6000-memory.dmp

Filesize
24KB

Download