6acd81408aa326352a7627e4c60291339130a5cba6ee3a1648d67ad3bb1ef788

Analysis

max time kernel
140s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
20/02/2024, 03:37

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General

Target

2024-02-20_988379077652bbc60a55afeeb8931490_cryptolocker.exe
Size

96KB
MD5

988379077652bbc60a55afeeb8931490
SHA1

34971b845b10517537e1d6df277fb28cc9f05d09
SHA256

6acd81408aa326352a7627e4c60291339130a5cba6ee3a1648d67ad3bb1ef788
SHA512

db1933da51e102f833c1194e2c737e87549efb5cd02358df9a2b1036554b4608253fe4f153a70530b0f080df0573ffb05e483be6b7e5437b9558bc2ba30e3762
SSDEEP

768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRiWNa9mktJvfT3S:xj+VGMOtEvwDpjubwQEIiVmkfS

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4140-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023131-13.dat	CryptoLocker_rule2
behavioral2/memory/4140-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2620-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4140-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0007000000023131-13.dat	CryptoLocker_set1
behavioral2/memory/4140-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2620-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/4140-0-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x0007000000023131-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4140-19-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2620-26-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-02-20_988379077652bbc60a55afeeb8931490_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2620	misid.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4140 wrote to memory of 2620	4140	2024-02-20_988379077652bbc60a55afeeb8931490_cryptolocker.exe	84
PID 4140 wrote to memory of 2620	4140	2024-02-20_988379077652bbc60a55afeeb8931490_cryptolocker.exe	84
PID 4140 wrote to memory of 2620	4140	2024-02-20_988379077652bbc60a55afeeb8931490_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-20_988379077652bbc60a55afeeb8931490_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-20_988379077652bbc60a55afeeb8931490_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4140
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2620

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
96KB

MD5
950663eaa9103bf7411ca0a6c945547b

SHA1
5a9b511458082c436c7be5c3683f5c18cbf2798b

SHA256
a2d14971806d4b96273848d308974458ce62f057c2694109d370c9abc2a0610b

SHA512
812e7c1b4e25762b61966ad752d6a1bc8fdb9a4af343787ed1522fb297e68f5e63c781440e78002dea0df6fa0f65cfac5572bc3a38713f94610354c11e1cfe37

Download Submit
memory/2620-18-0x0000000000860000-0x0000000000866000-memory.dmp

Filesize
24KB

Download
memory/2620-20-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2620-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4140-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4140-1-0x0000000002140000-0x0000000002146000-memory.dmp

Filesize
24KB

Download
memory/4140-2-0x0000000002140000-0x0000000002146000-memory.dmp

Filesize
24KB

Download
memory/4140-3-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/4140-19-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download