eac13b46a2de019346f83dbd97770d744e4e1aa4ce188890e2705b8028abf44a

General

Target

eac13b46a2de019346f83dbd97770d744e4e1aa4ce188890e2705b8028abf44aN.exe
Size

70KB
MD5

bb26dcfa71036545d79066d486b79620
SHA1

56910081279f8741df2aa00f6925185ea034eafe
SHA256

eac13b46a2de019346f83dbd97770d744e4e1aa4ce188890e2705b8028abf44a
SHA512

6a4350c0e2fa8187104b8ba98f8ec68e8fb4245fbc093e4f816710d673df89941a181ebc34ecfe43a93a9283b75b204f0c030d24d1434285226199cf2a719981
SSDEEP

1536:Or3Z5IfQmv81a7pP1F3yXFdtnSjdEEEE8E:SJOfQm01q9F3yXFd1SjdEEEEP

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
2092	attrib.exe

Deletes itself 1 IoCs

pid	Process
2940	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2524	acahost.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\acahost.exe	eac13b46a2de019346f83dbd97770d744e4e1aa4ce188890e2705b8028abf44aN.exe
File opened for modification	C:\Windows\Debug\acahost.exe	eac13b46a2de019346f83dbd97770d744e4e1aa4ce188890e2705b8028abf44aN.exe
File opened for modification	C:\Windows\Debug\acahost.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	eac13b46a2de019346f83dbd97770d744e4e1aa4ce188890e2705b8028abf44aN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	acahost.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	acahost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	acahost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	1288	eac13b46a2de019346f83dbd97770d744e4e1aa4ce188890e2705b8028abf44aN.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1288 wrote to memory of 2092	1288	eac13b46a2de019346f83dbd97770d744e4e1aa4ce188890e2705b8028abf44aN.exe	29
PID 1288 wrote to memory of 2092	1288	eac13b46a2de019346f83dbd97770d744e4e1aa4ce188890e2705b8028abf44aN.exe	29
PID 1288 wrote to memory of 2092	1288	eac13b46a2de019346f83dbd97770d744e4e1aa4ce188890e2705b8028abf44aN.exe	29
PID 1288 wrote to memory of 2092	1288	eac13b46a2de019346f83dbd97770d744e4e1aa4ce188890e2705b8028abf44aN.exe	29
PID 1288 wrote to memory of 2940	1288	eac13b46a2de019346f83dbd97770d744e4e1aa4ce188890e2705b8028abf44aN.exe	32
PID 1288 wrote to memory of 2940	1288	eac13b46a2de019346f83dbd97770d744e4e1aa4ce188890e2705b8028abf44aN.exe	32
PID 1288 wrote to memory of 2940	1288	eac13b46a2de019346f83dbd97770d744e4e1aa4ce188890e2705b8028abf44aN.exe	32
PID 1288 wrote to memory of 2940	1288	eac13b46a2de019346f83dbd97770d744e4e1aa4ce188890e2705b8028abf44aN.exe	32

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2092	attrib.exe

C:\Users\Admin\AppData\Local\Temp\eac13b46a2de019346f83dbd97770d744e4e1aa4ce188890e2705b8028abf44aN.exe
"C:\Users\Admin\AppData\Local\Temp\eac13b46a2de019346f83dbd97770d744e4e1aa4ce188890e2705b8028abf44aN.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1288
- C:\Windows\SysWOW64\attrib.exe
  attrib +a +s +h +r C:\Windows\Debug\acahost.exe
  2⤵
  - Sets file to hidden
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Views/modifies file attributes
  PID:2092
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\EAC13B~1.EXE > nul
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2940

C:\Windows\Debug\acahost.exe
C:\Windows\Debug\acahost.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Checks processor information in registry
PID:2524

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\acahost.exe

Filesize
70KB

MD5
4f8037161f4e0fb623b9aa17c5b56b41

SHA1
0178c0393af752415a3c9fbe167078d3adb5c021

SHA256
46830de7f4d16067c848d0e40d1dfb995938f8044b78534f2cc18a8652ac3b23

SHA512
0245ec57ab9ef818b02e9dd4fae8ce43345b702548102f34d7cbe41d43118714dfd31fa31ff3177d3e0bb22f3f3e276af011bc945df2c37ba8c4a86e04fe9c75

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads