ec5ff7d57c8f97fe32b6d0e7eb027af061c3c20aef8a64da70f179125fb90c2c

General

Target

ec5ff7d57c8f97fe32b6d0e7eb027af061c3c20aef8a64da70f179125fb90c2cN.exe
Size

68KB
MD5

4d3824ba7d346e5f348c580ebce737f0
SHA1

9d7059f02c605d529ed5b4f48341843ded68e258
SHA256

ec5ff7d57c8f97fe32b6d0e7eb027af061c3c20aef8a64da70f179125fb90c2c
SHA512

0390479e82fc6c8d4e4f23a56b41d68df28cbcde2f79a60bfc27c9d811e6cd90e30f8ce67da03ff88329396088c9795e0d581c1f646ffa626543cf68c5f654c8
SSDEEP

768:8m2HWaXqAJplmRPEW1PiGz96XyX9TdtldE9xKd9:8m0wANm5EW17zgyXVdtnPd9

Score

8^/10

defense_evasion discovery evasion

Malware Config

Signatures

Sets file to hidden 1 TTPs 1 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1564.001

pid	Process
3024	attrib.exe

Deletes itself 1 IoCs

pid	Process
2060	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2316	iuyhost.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

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\Debug\iuyhost.exe	ec5ff7d57c8f97fe32b6d0e7eb027af061c3c20aef8a64da70f179125fb90c2cN.exe
File opened for modification	C:\Windows\Debug\iuyhost.exe	ec5ff7d57c8f97fe32b6d0e7eb027af061c3c20aef8a64da70f179125fb90c2cN.exe
File opened for modification	C:\Windows\Debug\iuyhost.exe	attrib.exe

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 4 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	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	iuyhost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ec5ff7d57c8f97fe32b6d0e7eb027af061c3c20aef8a64da70f179125fb90c2cN.exe

Checks processor information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	iuyhost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	iuyhost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2516	ec5ff7d57c8f97fe32b6d0e7eb027af061c3c20aef8a64da70f179125fb90c2cN.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2516 wrote to memory of 3024	2516	ec5ff7d57c8f97fe32b6d0e7eb027af061c3c20aef8a64da70f179125fb90c2cN.exe	30
PID 2516 wrote to memory of 3024	2516	ec5ff7d57c8f97fe32b6d0e7eb027af061c3c20aef8a64da70f179125fb90c2cN.exe	30
PID 2516 wrote to memory of 3024	2516	ec5ff7d57c8f97fe32b6d0e7eb027af061c3c20aef8a64da70f179125fb90c2cN.exe	30
PID 2516 wrote to memory of 3024	2516	ec5ff7d57c8f97fe32b6d0e7eb027af061c3c20aef8a64da70f179125fb90c2cN.exe	30
PID 2516 wrote to memory of 2060	2516	ec5ff7d57c8f97fe32b6d0e7eb027af061c3c20aef8a64da70f179125fb90c2cN.exe	33
PID 2516 wrote to memory of 2060	2516	ec5ff7d57c8f97fe32b6d0e7eb027af061c3c20aef8a64da70f179125fb90c2cN.exe	33
PID 2516 wrote to memory of 2060	2516	ec5ff7d57c8f97fe32b6d0e7eb027af061c3c20aef8a64da70f179125fb90c2cN.exe	33
PID 2516 wrote to memory of 2060	2516	ec5ff7d57c8f97fe32b6d0e7eb027af061c3c20aef8a64da70f179125fb90c2cN.exe	33

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3024	attrib.exe

C:\Users\Admin\AppData\Local\Temp\ec5ff7d57c8f97fe32b6d0e7eb027af061c3c20aef8a64da70f179125fb90c2cN.exe
"C:\Users\Admin\AppData\Local\Temp\ec5ff7d57c8f97fe32b6d0e7eb027af061c3c20aef8a64da70f179125fb90c2cN.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2516
- C:\Windows\SysWOW64\attrib.exe
  attrib +a +s +h +r C:\Windows\Debug\iuyhost.exe
  2⤵
  - Sets file to hidden
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Views/modifies file attributes
  PID:3024
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\EC5FF7~1.EXE > nul
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2060

C:\Windows\Debug\iuyhost.exe
C:\Windows\Debug\iuyhost.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Checks processor information in registry
PID:2316

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Hide Artifacts

2

T1564

Hidden Files and Directories

2

T1564.001

Indicator Removal

1

T1070

File Deletion

1

T1070.004

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\Debug\iuyhost.exe

Filesize
68KB

MD5
7e1c948c85afb53676ac15ece9e84e66

SHA1
3a7487ebe20df8dc313e06d5103d7725b610d3eb

SHA256
ac4c8f06da0858d2728d5ab6acec94ed9cab6e6e36c2308dcd450be700e70462

SHA512
78702f4418f58211c275af9264a9d59c4891887555e56be4c1dc7f1af5a4d8440c14e61443beecbd155bf857b94f62e57e7da4a11cf19b95f3da343bca1282b1

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads