b6699f5d9c831f929999aa14a61a5abf69a2295b2a6c4017fe2d7c81a6c8e3d9

General

Target

b6699f5d9c831f929999aa14a61a5abf69a2295b2a6c4017fe2d7c81a6c8e3d9N.exe
Size

135KB
MD5

5afbd7dae5a115e09dfcee2dc2625170
SHA1

52c682351ca199a87d1365e482d4df6bc8d00c04
SHA256

b6699f5d9c831f929999aa14a61a5abf69a2295b2a6c4017fe2d7c81a6c8e3d9
SHA512

2512bdec2fdf79b9352b6a6adadccf397e6cc36b8b6fbe9223e27440b941a3491d478933d17e0cda1e69d75c68ca170eb54cc9f778938d87e3aba18ff0969fbc
SSDEEP

1536:YGYU/W2/HG6QMauSV3ixJHABLrmhH7i9eNOOg00GqMIK7aGZh3SO8A:YfU/WF6QMauSuiWNi9eNOl0007NZIO1

Score

7^/10

defense_evasion discovery persistence upx

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2596	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2684	wuauclt.exe

Loads dropped DLL 1 IoCs

pid	Process
2792	b6699f5d9c831f929999aa14a61a5abf69a2295b2a6c4017fe2d7c81a6c8e3d9N.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"	b6699f5d9c831f929999aa14a61a5abf69a2295b2a6c4017fe2d7c81a6c8e3d9N.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 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2792-1-0x0000000000A40000-0x0000000000A68000-memory.dmp	upx
behavioral1/files/0x000700000001867e-2.dat	upx
behavioral1/memory/2684-7-0x0000000001210000-0x0000000001238000-memory.dmp	upx
behavioral1/memory/2792-8-0x0000000000A40000-0x0000000000A68000-memory.dmp	upx
behavioral1/memory/2684-10-0x0000000001210000-0x0000000001238000-memory.dmp	upx
behavioral1/memory/2792-11-0x0000000000A40000-0x0000000000A68000-memory.dmp	upx

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	b6699f5d9c831f929999aa14a61a5abf69a2295b2a6c4017fe2d7c81a6c8e3d9N.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 2792 wrote to memory of 2684	2792	b6699f5d9c831f929999aa14a61a5abf69a2295b2a6c4017fe2d7c81a6c8e3d9N.exe	30
PID 2792 wrote to memory of 2684	2792	b6699f5d9c831f929999aa14a61a5abf69a2295b2a6c4017fe2d7c81a6c8e3d9N.exe	30
PID 2792 wrote to memory of 2684	2792	b6699f5d9c831f929999aa14a61a5abf69a2295b2a6c4017fe2d7c81a6c8e3d9N.exe	30
PID 2792 wrote to memory of 2684	2792	b6699f5d9c831f929999aa14a61a5abf69a2295b2a6c4017fe2d7c81a6c8e3d9N.exe	30
PID 2792 wrote to memory of 2596	2792	b6699f5d9c831f929999aa14a61a5abf69a2295b2a6c4017fe2d7c81a6c8e3d9N.exe	31
PID 2792 wrote to memory of 2596	2792	b6699f5d9c831f929999aa14a61a5abf69a2295b2a6c4017fe2d7c81a6c8e3d9N.exe	31
PID 2792 wrote to memory of 2596	2792	b6699f5d9c831f929999aa14a61a5abf69a2295b2a6c4017fe2d7c81a6c8e3d9N.exe	31
PID 2792 wrote to memory of 2596	2792	b6699f5d9c831f929999aa14a61a5abf69a2295b2a6c4017fe2d7c81a6c8e3d9N.exe	31

C:\Users\Admin\AppData\Local\Temp\b6699f5d9c831f929999aa14a61a5abf69a2295b2a6c4017fe2d7c81a6c8e3d9N.exe
"C:\Users\Admin\AppData\Local\Temp\b6699f5d9c831f929999aa14a61a5abf69a2295b2a6c4017fe2d7c81a6c8e3d9N.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2792
- C:\ProgramData\Update\wuauclt.exe
  "C:\ProgramData\Update\wuauclt.exe" /run
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2684
- C:\windows\SysWOW64\cmd.exe
  "C:\windows\system32\cmd.exe" /c del /q "C:\Users\Admin\AppData\Local\Temp\b6699f5d9c831f929999aa14a61a5abf69a2295b2a6c4017fe2d7c81a6c8e3d9N.exe" >> NUL
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2596

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 Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\ProgramData\Update\wuauclt.exe

Filesize
135KB

MD5
0e77dfd8f6d3f22d95e142e83715611f

SHA1
c89b07c70c6f494297b9ab9c2a4767a1c99b918d

SHA256
2a8e6fa8aaf29f90554483e727534ef3896c8b19fc68dcff762a178edb4245c3

SHA512
84d7e8c45783dd5cb23bd6b252f98d33c2626e939e6cd793018cbce86308f98f9cd7487b64a7c3f2f72f955ed4de116555914e58a4fea2bc5cf8d529e10e20b5

Download Submit
memory/2684-7-0x0000000001210000-0x0000000001238000-memory.dmp

Filesize
160KB

Download
memory/2684-10-0x0000000001210000-0x0000000001238000-memory.dmp

Filesize
160KB

Download
memory/2792-1-0x0000000000A40000-0x0000000000A68000-memory.dmp

Filesize
160KB

Download
memory/2792-4-0x0000000000190000-0x00000000001B8000-memory.dmp

Filesize
160KB

Download
memory/2792-8-0x0000000000A40000-0x0000000000A68000-memory.dmp

Filesize
160KB

Download
memory/2792-9-0x0000000000190000-0x00000000001B8000-memory.dmp

Filesize
160KB

Download
memory/2792-11-0x0000000000A40000-0x0000000000A68000-memory.dmp

Filesize
160KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads