650001cea83a431c682825299faf23e849df7dd8fe66079a57cdad6ea990cad9

General

Target

650001cea83a431c682825299faf23e849df7dd8fe66079a57cdad6ea990cad9N.exe
Size

135KB
MD5

90d6d463d9e18cbb0a5b429f9b6c3b60
SHA1

66b329e1f420f8c5d323c02de1c9961cab02bede
SHA256

650001cea83a431c682825299faf23e849df7dd8fe66079a57cdad6ea990cad9
SHA512

bec47baa1c66c84c3c7bb0252aca9794bcc7fba6fadbc77876a850318aefbdd85a081ccf031a2d10e283068a5aae250d1343a7f6dcf0334f53dcef661ed5e2cb
SSDEEP

1536:YGYU/W2/HG6QMauSV3ixJHABLrmhH7i9eNOOg00GqMIK7aGZh3SOt:YfU/WF6QMauSuiWNi9eNOl0007NZIOt

Score

7^/10

defense_evasion discovery persistence upx

Malware Config

Signatures

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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	650001cea83a431c682825299faf23e849df7dd8fe66079a57cdad6ea990cad9N.exe

Executes dropped EXE 1 IoCs

pid	Process
1428	wuauclt.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Window Update = "\"C:\\ProgramData\\Update\\wuauclt.exe\" /run"	650001cea83a431c682825299faf23e849df7dd8fe66079a57cdad6ea990cad9N.exe

Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
defense_evasion

File Deletion
T1070.004

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4504-0-0x0000000000100000-0x0000000000128000-memory.dmp	upx
behavioral2/files/0x0007000000023c85-3.dat	upx
behavioral2/memory/1428-5-0x0000000000FF0000-0x0000000001018000-memory.dmp	upx
behavioral2/memory/4504-6-0x0000000000100000-0x0000000000128000-memory.dmp	upx
behavioral2/memory/4504-7-0x0000000000100000-0x0000000000128000-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 3 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	650001cea83a431c682825299faf23e849df7dd8fe66079a57cdad6ea990cad9N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wuauclt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4504 wrote to memory of 1428	4504	650001cea83a431c682825299faf23e849df7dd8fe66079a57cdad6ea990cad9N.exe	82
PID 4504 wrote to memory of 1428	4504	650001cea83a431c682825299faf23e849df7dd8fe66079a57cdad6ea990cad9N.exe	82
PID 4504 wrote to memory of 1428	4504	650001cea83a431c682825299faf23e849df7dd8fe66079a57cdad6ea990cad9N.exe	82
PID 4504 wrote to memory of 4404	4504	650001cea83a431c682825299faf23e849df7dd8fe66079a57cdad6ea990cad9N.exe	91
PID 4504 wrote to memory of 4404	4504	650001cea83a431c682825299faf23e849df7dd8fe66079a57cdad6ea990cad9N.exe	91
PID 4504 wrote to memory of 4404	4504	650001cea83a431c682825299faf23e849df7dd8fe66079a57cdad6ea990cad9N.exe	91

C:\Users\Admin\AppData\Local\Temp\650001cea83a431c682825299faf23e849df7dd8fe66079a57cdad6ea990cad9N.exe
"C:\Users\Admin\AppData\Local\Temp\650001cea83a431c682825299faf23e849df7dd8fe66079a57cdad6ea990cad9N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4504
- C:\ProgramData\Update\wuauclt.exe
  "C:\ProgramData\Update\wuauclt.exe" /run
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:1428
- C:\windows\SysWOW64\cmd.exe
  "C:\windows\system32\cmd.exe" /c del /q "C:\Users\Admin\AppData\Local\Temp\650001cea83a431c682825299faf23e849df7dd8fe66079a57cdad6ea990cad9N.exe" >> NUL
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4404

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Indicator Removal

1

T1070

File Deletion

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\Update\wuauclt.exe

Filesize
135KB

MD5
82f2acd78ceb1087eebfaa9439e39f78

SHA1
f7d7f1f69f958c67c0abedbaeb063ae8e2142628

SHA256
10eb54494ebccdc1533669939d34338b44bccda123bb04c2e4e299d10dbfd886

SHA512
00372c24cd362778c00142bc8566c90f4175f6dbbdb45a829658b5dbfeb609407aa4c5dbec690f39fd09119da2f01f53b38e2db9585b5b7bc44c474eecfd72d9

Download Submit
memory/1428-5-0x0000000000FF0000-0x0000000001018000-memory.dmp

Filesize
160KB

Download
memory/4504-0-0x0000000000100000-0x0000000000128000-memory.dmp

Filesize
160KB

Download
memory/4504-6-0x0000000000100000-0x0000000000128000-memory.dmp

Filesize
160KB

Download
memory/4504-7-0x0000000000100000-0x0000000000128000-memory.dmp

Filesize
160KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads