2dafb06a4707423ca990989b5b51724a1ca488e4416d07cedfe625991944f30f

Analysis

max time kernel
141s
max time network
140s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
04-10-2024 03:43

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General

Target

2024-10-04_b092871fdbe944b3161eddc07cd4b439_cryptolocker.exe
Size

38KB
MD5

b092871fdbe944b3161eddc07cd4b439
SHA1

d0e237709905bf43176581a8a6d248deb79ecee6
SHA256

2dafb06a4707423ca990989b5b51724a1ca488e4416d07cedfe625991944f30f
SHA512

6de9410c848e1096a38b2dd4da1f517bdd71c56a1a6797b0a836e2f9b1d2e1e08a5cada60e8ca67427cb15c65abcc367aa3ff4f604c69edbfc4d588d01a40873
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITK:qDdFJy3QMOtEvwDpjjWMl7TK

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1488	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2248	2024-10-04_b092871fdbe944b3161eddc07cd4b439_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2248-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x0008000000012119-11.dat	upx
behavioral1/memory/1488-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2248-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1488-26-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-10-04_b092871fdbe944b3161eddc07cd4b439_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	asih.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2248 wrote to memory of 1488	2248	2024-10-04_b092871fdbe944b3161eddc07cd4b439_cryptolocker.exe	28
PID 2248 wrote to memory of 1488	2248	2024-10-04_b092871fdbe944b3161eddc07cd4b439_cryptolocker.exe	28
PID 2248 wrote to memory of 1488	2248	2024-10-04_b092871fdbe944b3161eddc07cd4b439_cryptolocker.exe	28
PID 2248 wrote to memory of 1488	2248	2024-10-04_b092871fdbe944b3161eddc07cd4b439_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-10-04_b092871fdbe944b3161eddc07cd4b439_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-04_b092871fdbe944b3161eddc07cd4b439_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2248
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:1488

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
38KB

MD5
8ac9b9c1d6cf910a01e575b14ae4d0ac

SHA1
63272c47e22f884a3e366ea13c627fd6d0a48d7c

SHA256
7d0a98519097feba8a57497600d6eba3793a54ae6169fabb887a610e627211bb

SHA512
c4ec8d570d9acebed2960d51db2e8b01bb2d981e0d4b3241e22047bbcac3efb329d4f2aab8f51a02b2f9cc80e7b28d0006e96b237f3da546f0d2fbe885eb1208

Download Submit
memory/1488-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1488-19-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/1488-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2248-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2248-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2248-2-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2248-3-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download
memory/2248-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download