61ab4acf8f5df56aeae5bcde1df99ccff9923ddb63a4a4605be30b67115319d0

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
29/03/2024, 04:10

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General

Target

2024-03-29_ea25d6e042fbbdbcd53519bfe58bba1d_cryptolocker.exe
Size

63KB
MD5

ea25d6e042fbbdbcd53519bfe58bba1d
SHA1

bbb887bf005d499284ab2e2b1262cb1b7df88e14
SHA256

61ab4acf8f5df56aeae5bcde1df99ccff9923ddb63a4a4605be30b67115319d0
SHA512

9a9bbc9067d3cf2dddf4ee89d9eebf88aaa1dcd52b0f904971f00e92ab0285c8b35c68dfc3a46eb6b986529aec5d35787a636436681fe2adefa114baac021726
SSDEEP

768:zQz7yVEhs9+syJP6ntOOtEvwDpjFelaB7yBEY9Su8F5mnVwfX7:zj+soPSMOtEvwDpj4kpmeLmnw7

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1444-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x0009000000012248-11.dat	CryptoLocker_rule2
behavioral1/memory/1444-14-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2128-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2128-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/1444-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x0009000000012248-11.dat	CryptoLocker_set1
behavioral1/memory/1444-14-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2128-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2128-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/1444-1-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x0009000000012248-11.dat	UPX
behavioral1/memory/1444-14-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2128-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2128-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2128	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
1444	2024-03-29_ea25d6e042fbbdbcd53519bfe58bba1d_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1444-1-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x0009000000012248-11.dat	upx
behavioral1/memory/1444-14-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2128-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2128-26-0x0000000000500000-0x0000000000510000-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 1444 wrote to memory of 2128	1444	2024-03-29_ea25d6e042fbbdbcd53519bfe58bba1d_cryptolocker.exe	28
PID 1444 wrote to memory of 2128	1444	2024-03-29_ea25d6e042fbbdbcd53519bfe58bba1d_cryptolocker.exe	28
PID 1444 wrote to memory of 2128	1444	2024-03-29_ea25d6e042fbbdbcd53519bfe58bba1d_cryptolocker.exe	28
PID 1444 wrote to memory of 2128	1444	2024-03-29_ea25d6e042fbbdbcd53519bfe58bba1d_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-29_ea25d6e042fbbdbcd53519bfe58bba1d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-29_ea25d6e042fbbdbcd53519bfe58bba1d_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1444
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2128

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
e58222265abd701f02beb6a79a2d74ae

SHA1
2f3f0a3559721c2118980a8898924bc893c855b1

SHA256
ed8e046329181feaf2c191436324b48c5862ca918cc02cb12616f22b2512f083

SHA512
1d0634bdc77f732612940ab08cc5084ad38b8cc4355a4d758f209f97bc7a2368047d095ee0c22f8c9fc5e52e1c79496820ea973fc5f8ca87fcb52bbcd34250b1

Download Submit
memory/1444-1-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1444-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1444-2-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1444-3-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/1444-14-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2128-18-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/2128-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2128-19-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/2128-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download