3d79d0b0fcaa165200205faf9a9fc8858e51072f8c9c7f4ac3aecc74c1c48167

General

Target

4188e6b9061061d946909946d81d0c10N.exe
Size

135KB
MD5

4188e6b9061061d946909946d81d0c10
SHA1

05c8bee2af630442b51aa2d1938ffa464ca234b2
SHA256

3d79d0b0fcaa165200205faf9a9fc8858e51072f8c9c7f4ac3aecc74c1c48167
SHA512

3b31a54e22540ef841e35c8ac5d74b8f564fe0fddfae5413989df260ee443c45ad9598c4f5c6cb6f27740bddb1ff4573f10b535015eb121bbb274dbdb9b87aca
SSDEEP

1536:YGYU/W2/HG6QMauSV3ixJHABLrmhH7i9eNOOg00GqMIK7aGZh3SOv:YfU/WF6QMauSuiWNi9eNOl0007NZIOv

Score

7^/10

defense_evasion discovery persistence upx

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2960	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2132	wuauclt.exe

Loads dropped DLL 1 IoCs

pid	Process
2344	4188e6b9061061d946909946d81d0c10N.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2344-0-0x0000000001110000-0x0000000001138000-memory.dmp	upx
behavioral1/files/0x0008000000018f98-2.dat	upx
behavioral1/memory/2132-7-0x0000000001110000-0x0000000001138000-memory.dmp	upx
behavioral1/memory/2344-8-0x0000000001110000-0x0000000001138000-memory.dmp	upx
behavioral1/memory/2344-10-0x0000000001110000-0x0000000001138000-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"	4188e6b9061061d946909946d81d0c10N.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4188e6b9061061d946909946d81d0c10N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wuauclt.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2344 wrote to memory of 2132	2344	4188e6b9061061d946909946d81d0c10N.exe	30
PID 2344 wrote to memory of 2132	2344	4188e6b9061061d946909946d81d0c10N.exe	30
PID 2344 wrote to memory of 2132	2344	4188e6b9061061d946909946d81d0c10N.exe	30
PID 2344 wrote to memory of 2132	2344	4188e6b9061061d946909946d81d0c10N.exe	30
PID 2344 wrote to memory of 2960	2344	4188e6b9061061d946909946d81d0c10N.exe	31
PID 2344 wrote to memory of 2960	2344	4188e6b9061061d946909946d81d0c10N.exe	31
PID 2344 wrote to memory of 2960	2344	4188e6b9061061d946909946d81d0c10N.exe	31
PID 2344 wrote to memory of 2960	2344	4188e6b9061061d946909946d81d0c10N.exe	31

C:\Users\Admin\AppData\Local\Temp\4188e6b9061061d946909946d81d0c10N.exe
"C:\Users\Admin\AppData\Local\Temp\4188e6b9061061d946909946d81d0c10N.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2344
- C:\ProgramData\Update\wuauclt.exe
  "C:\ProgramData\Update\wuauclt.exe" /run
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2132
- C:\windows\SysWOW64\cmd.exe
  "C:\windows\system32\cmd.exe" /c del /q "C:\Users\Admin\AppData\Local\Temp\4188e6b9061061d946909946d81d0c10N.exe" >> NUL
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2960

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

\ProgramData\Update\wuauclt.exe

Filesize
135KB

MD5
924160b516b900b0c7225080ef3e6ce1

SHA1
a17baa8c1df36388afec3f68478391f02ec585c4

SHA256
4d2a04752e18f72916da5f45fa28a374879d8fed89cf48617ffb6db3f3c3083d

SHA512
61fc641d35454cf752865c185806fc8bd2504ecb7bc1d0b95a885420a5f218934fc0924d6655ac575b006bc25b6a7fee52132393a51f341c99960c13338a0d28

Download Submit
memory/2132-7-0x0000000001110000-0x0000000001138000-memory.dmp

Filesize
160KB

Download
memory/2344-0-0x0000000001110000-0x0000000001138000-memory.dmp

Filesize
160KB

Download
memory/2344-6-0x0000000000260000-0x0000000000288000-memory.dmp

Filesize
160KB

Download
memory/2344-8-0x0000000001110000-0x0000000001138000-memory.dmp

Filesize
160KB

Download
memory/2344-9-0x0000000000260000-0x0000000000288000-memory.dmp

Filesize
160KB

Download
memory/2344-10-0x0000000001110000-0x0000000001138000-memory.dmp

Filesize
160KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads