8557c4a1c552b908e46d6b34a8695e2926ef9483b1604c2b826a90ac0cce82c8

General

Target

2024-03-14_627d683a34ac1a7f15cc5e48d8b157b8_cryptolocker.exe
Size

68KB
MD5

627d683a34ac1a7f15cc5e48d8b157b8
SHA1

e61c3df1e23eebca21f78e6d319d13c2378d9b4a
SHA256

8557c4a1c552b908e46d6b34a8695e2926ef9483b1604c2b826a90ac0cce82c8
SHA512

028c840e192624059fce4102f327271424fa2e67282f41bf8051f880eff27d5b4131ced255fcfba758a09879b8dd8cdebfeea9702e570dfe8b0729d87fef06bb
SSDEEP

1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs9X:C4Q2c94OtEvwDpj4H8za

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

resource	yara_rule
behavioral1/memory/2960-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a000000012251-14.dat	CryptoLocker_rule2
behavioral1/memory/2960-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1784-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2960-16-0x0000000000990000-0x00000000009A0000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1784-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2960-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2960-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1784-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1784-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 6 IoCs

resource	yara_rule
behavioral1/memory/2960-1-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000a000000012251-14.dat	UPX
behavioral1/memory/2960-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1784-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2960-16-0x0000000000990000-0x00000000009A0000-memory.dmp	UPX
behavioral1/memory/1784-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
1784	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2960	2024-03-14_627d683a34ac1a7f15cc5e48d8b157b8_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2960-1-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000a000000012251-14.dat	upx
behavioral1/memory/2960-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1784-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1784-27-0x0000000000500000-0x0000000000510000-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 2960 wrote to memory of 1784	2960	2024-03-14_627d683a34ac1a7f15cc5e48d8b157b8_cryptolocker.exe	28
PID 2960 wrote to memory of 1784	2960	2024-03-14_627d683a34ac1a7f15cc5e48d8b157b8_cryptolocker.exe	28
PID 2960 wrote to memory of 1784	2960	2024-03-14_627d683a34ac1a7f15cc5e48d8b157b8_cryptolocker.exe	28
PID 2960 wrote to memory of 1784	2960	2024-03-14_627d683a34ac1a7f15cc5e48d8b157b8_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-14_627d683a34ac1a7f15cc5e48d8b157b8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-14_627d683a34ac1a7f15cc5e48d8b157b8_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2960
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:1784

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
68KB

MD5
232fef648615f2c4f009f4576ebef951

SHA1
f810ccd4dab5e4e70c7fd56e90fb1c1d1c56899d

SHA256
0982d3bdad7a6fa92bab17af67a9b8f9e08d53f625af486d445e49071adddd9b

SHA512
ec19f42bdacf4a7a775d4927567ea6312207580e0291c9216b3ba2da1285528bbb0500e1aff7a41a9bc2ec48d780614fe2dfceae5ea3e5eab125a994b83b92dd

Download Submit
memory/1784-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1784-19-0x0000000000210000-0x0000000000216000-memory.dmp

Filesize
24KB

Download
memory/1784-21-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/1784-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2960-1-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2960-0-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2960-2-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/2960-3-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2960-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2960-16-0x0000000000990000-0x00000000009A0000-memory.dmp

Filesize
64KB

Download

Analysis

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