400fc25994380d22fe7e6770108fd815d00629fc94b75bf6c43530a5571dbaef

General

Target

400fc25994380d22fe7e6770108fd815d00629fc94b75bf6c43530a5571dbaef.exe
Size

134KB
MD5

895927d362981a5127405fafad5bedda
SHA1

3ccdacb65d3b6247d2a34714908517ee1f52ac26
SHA256

400fc25994380d22fe7e6770108fd815d00629fc94b75bf6c43530a5571dbaef
SHA512

e8cc0c6c8c4ba673c09ceaf2142f0a8ac1f6b50787ba6b030945520f16a276ab5e23a58f20a57d4ac20b3d2fd0f904298ca92d6d3031ae967ea93710435f401f
SSDEEP

1536:YGYU/W2/HG6QMauSV3ixJHABLrmhH7i9eNOOg00GqMIK7aGZh3SOY:YfU/WF6QMauSuiWNi9eNOl0007NZIOY

Score

9^/10

Malware Config

Signatures

UPX dump on OEP (original entry point) 6 IoCs

resource	yara_rule
behavioral1/memory/3004-0-0x0000000001310000-0x0000000001338000-memory.dmp	UPX
behavioral1/files/0x0032000000015ba8-6.dat	UPX
behavioral1/memory/3004-4-0x0000000000FE0000-0x0000000001008000-memory.dmp	UPX
behavioral1/memory/3004-7-0x0000000001310000-0x0000000001338000-memory.dmp	UPX
behavioral1/memory/3040-8-0x0000000000FE0000-0x0000000001008000-memory.dmp	UPX
behavioral1/memory/3004-9-0x0000000001310000-0x0000000001338000-memory.dmp	UPX

Deletes itself 1 IoCs

pid	Process
2560	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
3040	wuauclt.exe

Loads dropped DLL 1 IoCs

pid	Process
3004	400fc25994380d22fe7e6770108fd815d00629fc94b75bf6c43530a5571dbaef.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/3004-0-0x0000000001310000-0x0000000001338000-memory.dmp	upx
behavioral1/files/0x0032000000015ba8-6.dat	upx
behavioral1/memory/3004-4-0x0000000000FE0000-0x0000000001008000-memory.dmp	upx
behavioral1/memory/3004-7-0x0000000001310000-0x0000000001338000-memory.dmp	upx
behavioral1/memory/3040-8-0x0000000000FE0000-0x0000000001008000-memory.dmp	upx
behavioral1/memory/3004-9-0x0000000001310000-0x0000000001338000-memory.dmp	upx

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"	400fc25994380d22fe7e6770108fd815d00629fc94b75bf6c43530a5571dbaef.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3004 wrote to memory of 3040	3004	400fc25994380d22fe7e6770108fd815d00629fc94b75bf6c43530a5571dbaef.exe	28
PID 3004 wrote to memory of 3040	3004	400fc25994380d22fe7e6770108fd815d00629fc94b75bf6c43530a5571dbaef.exe	28
PID 3004 wrote to memory of 3040	3004	400fc25994380d22fe7e6770108fd815d00629fc94b75bf6c43530a5571dbaef.exe	28
PID 3004 wrote to memory of 3040	3004	400fc25994380d22fe7e6770108fd815d00629fc94b75bf6c43530a5571dbaef.exe	28
PID 3004 wrote to memory of 2560	3004	400fc25994380d22fe7e6770108fd815d00629fc94b75bf6c43530a5571dbaef.exe	29
PID 3004 wrote to memory of 2560	3004	400fc25994380d22fe7e6770108fd815d00629fc94b75bf6c43530a5571dbaef.exe	29
PID 3004 wrote to memory of 2560	3004	400fc25994380d22fe7e6770108fd815d00629fc94b75bf6c43530a5571dbaef.exe	29
PID 3004 wrote to memory of 2560	3004	400fc25994380d22fe7e6770108fd815d00629fc94b75bf6c43530a5571dbaef.exe	29

C:\Users\Admin\AppData\Local\Temp\400fc25994380d22fe7e6770108fd815d00629fc94b75bf6c43530a5571dbaef.exe
"C:\Users\Admin\AppData\Local\Temp\400fc25994380d22fe7e6770108fd815d00629fc94b75bf6c43530a5571dbaef.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:3004
- C:\ProgramData\Update\wuauclt.exe
  "C:\ProgramData\Update\wuauclt.exe" /run
  2⤵
  - Executes dropped EXE
  PID:3040
- C:\windows\SysWOW64\cmd.exe
  "C:\windows\system32\cmd.exe" /c del /q "C:\Users\Admin\AppData\Local\Temp\400fc25994380d22fe7e6770108fd815d00629fc94b75bf6c43530a5571dbaef.exe" >> NUL
  2⤵
  - Deletes itself
  PID:2560

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

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\Update\wuauclt.exe

Filesize
134KB

MD5
7b48f9fe053e4bbdb42c646904798a11

SHA1
2b51e75571a57a15aa48a21cbc6ad4d6197a72b5

SHA256
20cfce9e83cde73adc70c1c5a9dd0b31667b96c55bdef2f4cdb699cb26b37900

SHA512
7f712d9ae9634ad78eeebe4792278d6a815613846d71cbe87be623765adb10c63b32b6e239ba9e05a41a86f16beb94e97da4344327aad80601eb2fcafab9d795

Download Submit
memory/3004-0-0x0000000001310000-0x0000000001338000-memory.dmp

Filesize
160KB

Download
memory/3004-4-0x0000000000FE0000-0x0000000001008000-memory.dmp

Filesize
160KB

Download
memory/3004-7-0x0000000001310000-0x0000000001338000-memory.dmp

Filesize
160KB

Download
memory/3004-9-0x0000000001310000-0x0000000001338000-memory.dmp

Filesize
160KB

Download
memory/3004-10-0x0000000000FE0000-0x0000000001008000-memory.dmp

Filesize
160KB

Download
memory/3040-8-0x0000000000FE0000-0x0000000001008000-memory.dmp

Filesize
160KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads