d0ac618a4467497694b6af9e35aa1a343c8092b881848fc5b6176bfd43cedd67

Analysis

max time kernel
150s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
24-02-2024 14:37

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General

Target

2024-02-24_65e2a346d37c51398f49725d87406e2b_cryptolocker.exe
Size

77KB
MD5

65e2a346d37c51398f49725d87406e2b
SHA1

82963cef9c101a543fd57fd323aedbf76e3385af
SHA256

d0ac618a4467497694b6af9e35aa1a343c8092b881848fc5b6176bfd43cedd67
SHA512

1703c37181c9b41143f0ad33efdad7e760c7c6f79906d10a4236f3008933396eeffe09f7018870858386fb2edf5da9533b883d27075f1aeaef9b503f2e51e164
SSDEEP

1536:zj+soPSMOtEvwDpj4ktBl01hJ0tq1kya8:zCsanOtEvwDpjO

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4448-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00070000000231ee-13.dat	CryptoLocker_rule2
behavioral2/memory/4448-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1664-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4448-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x00070000000231ee-13.dat	CryptoLocker_set1
behavioral2/memory/4448-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1664-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/4448-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x00070000000231ee-13.dat	UPX
behavioral2/memory/4448-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/1664-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

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-1-5-21-3054445511-921769590-4013668107-1000\Control Panel\International\Geo\Nation	2024-02-24_65e2a346d37c51398f49725d87406e2b_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1664	misid.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4448-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x00070000000231ee-13.dat	upx
behavioral2/memory/4448-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1664-26-0x0000000000500000-0x0000000000510000-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 3 IoCs

description	pid	Process	procid_target
PID 4448 wrote to memory of 1664	4448	2024-02-24_65e2a346d37c51398f49725d87406e2b_cryptolocker.exe	89
PID 4448 wrote to memory of 1664	4448	2024-02-24_65e2a346d37c51398f49725d87406e2b_cryptolocker.exe	89
PID 4448 wrote to memory of 1664	4448	2024-02-24_65e2a346d37c51398f49725d87406e2b_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-02-24_65e2a346d37c51398f49725d87406e2b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-24_65e2a346d37c51398f49725d87406e2b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4448
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:1664

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

Replay Monitor

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Downloads

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

Filesize
78KB

MD5
c7e51a84bed91e6d5cf910c0ec986e1a

SHA1
3cc3988f10a1d4a81ed8fc4239e568802cd5c865

SHA256
081e20e16c70366018a532d2465d7b897d3f11c98882731d768c82f0f68d4b8c

SHA512
a9d03700c9570c4312dbf05f5bb8d4dfc84a843b9f43dfbb6315390eace8aa87f11fe14c52153280e6f1797fec15b6244292bbe752577a0a49a7f709b49d5654

Download Submit
memory/1664-19-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/1664-23-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/1664-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4448-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4448-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4448-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4448-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4448-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download