9b4d806580aa4f349f3190cf99e6a73e9d299c222612fb87e7c89adc4eae33bd

General

Target

6dd900c1b5b139566a2d74ee10b14020N.exe
Size

135KB
MD5

6dd900c1b5b139566a2d74ee10b14020
SHA1

eac178d28de0effc573c3d368b66510403812d48
SHA256

9b4d806580aa4f349f3190cf99e6a73e9d299c222612fb87e7c89adc4eae33bd
SHA512

7e1a8ce9b21c43523c2e6574b000a278d613ec97fbfbbb74b4987929d3a0b5b300a87bb596445bda45b80a1a094e5a19cc37131d1ffd41037e012e1200aa9eac
SSDEEP

1536:YGYU/W2/HG6QMauSV3ixJHABLrmhH7i9eNOOg00GqMIK7aGZh3SOD:YfU/WF6QMauSuiWNi9eNOl0007NZIOD

Score

7^/10

defense_evasion discovery persistence upx

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
1464	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
1788	wuauclt.exe

Loads dropped DLL 1 IoCs

pid	Process
1660	6dd900c1b5b139566a2d74ee10b14020N.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1660-0-0x00000000010A0000-0x00000000010C8000-memory.dmp	upx
behavioral1/memory/1788-7-0x0000000000A40000-0x0000000000A68000-memory.dmp	upx
behavioral1/files/0x0008000000015e4e-5.dat	upx
behavioral1/memory/1660-8-0x00000000010A0000-0x00000000010C8000-memory.dmp	upx
behavioral1/memory/1660-10-0x00000000010A0000-0x00000000010C8000-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"	6dd900c1b5b139566a2d74ee10b14020N.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
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	6dd900c1b5b139566a2d74ee10b14020N.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 8 IoCs

description	pid	Process	procid_target
PID 1660 wrote to memory of 1788	1660	6dd900c1b5b139566a2d74ee10b14020N.exe	28
PID 1660 wrote to memory of 1788	1660	6dd900c1b5b139566a2d74ee10b14020N.exe	28
PID 1660 wrote to memory of 1788	1660	6dd900c1b5b139566a2d74ee10b14020N.exe	28
PID 1660 wrote to memory of 1788	1660	6dd900c1b5b139566a2d74ee10b14020N.exe	28
PID 1660 wrote to memory of 1464	1660	6dd900c1b5b139566a2d74ee10b14020N.exe	31
PID 1660 wrote to memory of 1464	1660	6dd900c1b5b139566a2d74ee10b14020N.exe	31
PID 1660 wrote to memory of 1464	1660	6dd900c1b5b139566a2d74ee10b14020N.exe	31
PID 1660 wrote to memory of 1464	1660	6dd900c1b5b139566a2d74ee10b14020N.exe	31

C:\Users\Admin\AppData\Local\Temp\6dd900c1b5b139566a2d74ee10b14020N.exe
"C:\Users\Admin\AppData\Local\Temp\6dd900c1b5b139566a2d74ee10b14020N.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1660
- C:\ProgramData\Update\wuauclt.exe
  "C:\ProgramData\Update\wuauclt.exe" /run
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:1788
- C:\windows\SysWOW64\cmd.exe
  "C:\windows\system32\cmd.exe" /c del /q "C:\Users\Admin\AppData\Local\Temp\6dd900c1b5b139566a2d74ee10b14020N.exe" >> NUL
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1464

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

System Information Discovery

1

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
fb1f466cbe186e412a1d3e8e99f62a20

SHA1
1353b16ab69c864c50fc258ccb309706bcf9c2d8

SHA256
fb8ff4b5d7267af220f4cbf59936efa7fb8fe740cb53ad47030cc8b2f5689791

SHA512
a4f741808b9bfab99de3cc50aebde6ac5a5320a06b645d60a3087668954b1f4433dc37135743966022eee80263754002bdf9c53de5acb58fb622c39321453f71

Download Submit
memory/1660-0-0x00000000010A0000-0x00000000010C8000-memory.dmp

Filesize
160KB

Download
memory/1660-6-0x0000000000A40000-0x0000000000A68000-memory.dmp

Filesize
160KB

Download
memory/1660-8-0x00000000010A0000-0x00000000010C8000-memory.dmp

Filesize
160KB

Download
memory/1660-9-0x0000000000A40000-0x0000000000A68000-memory.dmp

Filesize
160KB

Download
memory/1660-10-0x00000000010A0000-0x00000000010C8000-memory.dmp

Filesize
160KB

Download
memory/1660-11-0x0000000000A40000-0x0000000000A68000-memory.dmp

Filesize
160KB

Download
memory/1788-7-0x0000000000A40000-0x0000000000A68000-memory.dmp

Filesize
160KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads