fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1

General

Target

fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1.exe
Size

384KB
MD5

6ed9ee3a8e511ffbe7bf2e3f8c8c8d36
SHA1

cb511a0c49d5858e96793b78324d7d804d2d4fee
SHA256

fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1
SHA512

93ffcddee4c8687b06c02768e1efcf13b7f0fd9522c73c65627ab8c88216160872e23de577d58de6b8df0cec234b6b61c2ffebd84ef562d596ce487ebded94f5
SSDEEP

6144:Z5QioRT/ryfr1tR8PFgHu3WIvi0hGz0plscPC2fTOShhne:ZmioxO8cuGIJGg3jCGTO5

Score

8^/10

discovery evasion persistence trojan

Malware Config

Signatures

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\LVIZ = "C:\\Windows\\SysWOW64\\modemuih.exe"	fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	modemuih.exe

Executes dropped EXE 1 IoCs

pid	Process
1204	modemuih.exe

Checks BIOS information in registry 2 TTPs 1 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1.exe

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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	modemuih.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\modemuih.exe	fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1.exe
File opened for modification	C:\Windows\SysWOW64\modemuih.exe	fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1.exe

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

System Information Discovery
T1082

Gathers network information 2 TTPs 1 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

T1082

Command-Line Interface

T1059

pid	Process
224	ipconfig.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4108	fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1.exe
4108	fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1.exe
4108	fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1.exe
4108	fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4108	fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1204	modemuih.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4108 wrote to memory of 1204	4108	fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1.exe	82
PID 4108 wrote to memory of 1204	4108	fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1.exe	82
PID 4108 wrote to memory of 1204	4108	fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1.exe	82
PID 4108 wrote to memory of 4668	4108	fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1.exe	84
PID 4108 wrote to memory of 4668	4108	fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1.exe	84
PID 4108 wrote to memory of 4668	4108	fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1.exe	84
PID 1204 wrote to memory of 224	1204	modemuih.exe	86
PID 1204 wrote to memory of 224	1204	modemuih.exe	86
PID 1204 wrote to memory of 224	1204	modemuih.exe	86

C:\Users\Admin\AppData\Local\Temp\fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1.exe
"C:\Users\Admin\AppData\Local\Temp\fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1.exe"
1⤵
- Adds policy Run key to start application
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4108
- C:\Windows\SysWOW64\modemuih.exe
  C:\Windows\SysWOW64\modemuih.exe
  2⤵
  - Drops file in Drivers directory
  - Executes dropped EXE
  - Checks computer location settings
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1204
- - C:\Windows\SysWOW64\ipconfig.exe
    "C:\Windows\system32\ipconfig.exe" /flushdns
    3⤵
    - Gathers network information
    PID:224
- C:\Windows\SysWOW64\cmd.exe
  /c C:\Users\Admin\AppData\Local\Temp\~unins4859.bat "C:\Users\Admin\AppData\Local\Temp\fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1.exe"
  2⤵
  PID:4668

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Command-Line Interface

1

T1059

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

3

T1012

System Information Discovery

5

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\~unins4859.bat

Filesize
49B

MD5
9e0a2f5ab30517809b95a1ff1dd98c53

SHA1
5c1eefdf10e67d1e9216e2e3f5e92352d583c9ce

SHA256
97ac9fee75a1f7b63b3115e9c4fb9dda80b1caba26d2fb51325670dee261fe32

SHA512
e959cc1fd48fb1cccf135a697924c775a3812bab211fc7f9b00c5a9d617261d84c5d6f7cb548774c1e8f46811b06ca39c5603d0e10cbcb7b805f9abbe49b9b42

Download Submit
C:\Windows\SysWOW64\modemuih.exe

Filesize
147KB

MD5
9baf483a0fb8cb7e59bbab24c4fb814a

SHA1
977ac22c45ce00a6d17e8ac53c5327bf59adaa6f

SHA256
95fd079ebf8bc13e9857b0f3074d388bea6edd3118eb0297f74562fa16634c42

SHA512
504d787aac93ddb8e7e5aed59e0e06771749acfd517224838f1e3f1c0b5f791190270395aaacf88d3d5b95fd60b167744238653b52cdff52606295d036756c4e

Download Submit
C:\Windows\SysWOW64\modemuih.exe

Filesize
147KB

MD5
9baf483a0fb8cb7e59bbab24c4fb814a

SHA1
977ac22c45ce00a6d17e8ac53c5327bf59adaa6f

SHA256
95fd079ebf8bc13e9857b0f3074d388bea6edd3118eb0297f74562fa16634c42

SHA512
504d787aac93ddb8e7e5aed59e0e06771749acfd517224838f1e3f1c0b5f791190270395aaacf88d3d5b95fd60b167744238653b52cdff52606295d036756c4e

Download Submit
memory/1204-141-0x0000000000401000-0x0000000000403000-memory.dmp

Filesize
8KB

Download
memory/4108-132-0x0000000000400000-0x00000000004AE000-memory.dmp

Filesize
696KB

Download
memory/4108-133-0x00000000020C0000-0x000000000215A000-memory.dmp

Filesize
616KB

Download
memory/4108-137-0x0000000000400000-0x00000000004AE000-memory.dmp

Filesize
696KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads