c3f1fc4cfcfff38f0751234ecc0cceba6d48cfc060cca2b36f8a3d79618ca6d9

Analysis

max time kernel
112s
max time network
116s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
01/12/2022, 14:06

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General

Target

c3f1fc4cfcfff38f0751234ecc0cceba6d48cfc060cca2b36f8a3d79618ca6d9.exe
Size

589KB
MD5

ca08bb3f98ea05d3a39a5afb18047895
SHA1

d1da66b67829bb011a17dc1ed5467c9352b2258b
SHA256

c3f1fc4cfcfff38f0751234ecc0cceba6d48cfc060cca2b36f8a3d79618ca6d9
SHA512

417cef60104fce0f0ffc30c30d7d89406c829225fded5800713ecb9bac03ad8ddbb3cad5a1f2bcf1b24b59de9358e02bce1297d90bd3e3d42b76c0829b3f20ee
SSDEEP

12288:beykUj6dav1aMuD6upVUzhV8R3qX7BHzqGoKre+0crnECYJIdM:bOUj6UcPDPp6zhekRzXS+XDvq

Score

8^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3608	update.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1180-132-0x0000000000400000-0x0000000000427000-memory.dmp	upx
behavioral2/files/0x0007000000022f77-135.dat	upx
behavioral2/files/0x0007000000022f77-134.dat	upx
behavioral2/memory/1180-136-0x0000000000400000-0x0000000000427000-memory.dmp	upx
behavioral2/memory/3608-137-0x0000000000400000-0x0000000000414000-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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	c3f1fc4cfcfff38f0751234ecc0cceba6d48cfc060cca2b36f8a3d79618ca6d9.exe

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
336	3608	WerFault.exe	80

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1180 wrote to memory of 3608	1180	c3f1fc4cfcfff38f0751234ecc0cceba6d48cfc060cca2b36f8a3d79618ca6d9.exe	80
PID 1180 wrote to memory of 3608	1180	c3f1fc4cfcfff38f0751234ecc0cceba6d48cfc060cca2b36f8a3d79618ca6d9.exe	80
PID 1180 wrote to memory of 3608	1180	c3f1fc4cfcfff38f0751234ecc0cceba6d48cfc060cca2b36f8a3d79618ca6d9.exe	80

C:\Users\Admin\AppData\Local\Temp\c3f1fc4cfcfff38f0751234ecc0cceba6d48cfc060cca2b36f8a3d79618ca6d9.exe
"C:\Users\Admin\AppData\Local\Temp\c3f1fc4cfcfff38f0751234ecc0cceba6d48cfc060cca2b36f8a3d79618ca6d9.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1180
- C:\Users\Admin\AppData\Local\Temp\update.exe
  "C:\Users\Admin\AppData\Local\Temp\update.exe"
  2⤵
  - Executes dropped EXE
  PID:3608
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3608 -s 332
    3⤵
    - Program crash
    PID:336

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3608 -ip 3608
1⤵
PID:2160

Network

MITRE ATT&CK Enterprise v6

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\update.exe

Filesize
36KB

MD5
ab2f4264fdb0659740d60384f8bdda5e

SHA1
5b8b5858169462915907e0007ce4a3b450a3e4d8

SHA256
27764ea83bcd5243b1e7fcdfccd265930eec7aecf7bd87d58cb793f8f6372d6d

SHA512
58705fb6486dc9507894603c605a4bc384fcf2ca8ba66ba66acf50e5e771c00087f225bf0b814ad8d01099ffe4ac661f7f6ce311b9b71b1f19295938b2e403d1

Download Submit
C:\Users\Admin\AppData\Local\Temp\update.exe

Filesize
36KB

MD5
ab2f4264fdb0659740d60384f8bdda5e

SHA1
5b8b5858169462915907e0007ce4a3b450a3e4d8

SHA256
27764ea83bcd5243b1e7fcdfccd265930eec7aecf7bd87d58cb793f8f6372d6d

SHA512
58705fb6486dc9507894603c605a4bc384fcf2ca8ba66ba66acf50e5e771c00087f225bf0b814ad8d01099ffe4ac661f7f6ce311b9b71b1f19295938b2e403d1

Download Submit
memory/1180-132-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/1180-136-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/3608-137-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download