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
1676	attrib.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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	ec5ff7d57c8f97fe32b6d0e7eb027af061c3c20aef8a64da70f179125fb90c2cN.exe

Executes dropped EXE 1 IoCs

pid	Process
3884	pwshost.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\pwshost.exe	ec5ff7d57c8f97fe32b6d0e7eb027af061c3c20aef8a64da70f179125fb90c2cN.exe
File opened for modification	C:\Windows\Debug\pwshost.exe	ec5ff7d57c8f97fe32b6d0e7eb027af061c3c20aef8a64da70f179125fb90c2cN.exe
File opened for modification	C:\Windows\Debug\pwshost.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	ec5ff7d57c8f97fe32b6d0e7eb027af061c3c20aef8a64da70f179125fb90c2cN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	pwshost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	pwshost.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	pwshost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	4492	ec5ff7d57c8f97fe32b6d0e7eb027af061c3c20aef8a64da70f179125fb90c2cN.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4492 wrote to memory of 1676	4492	ec5ff7d57c8f97fe32b6d0e7eb027af061c3c20aef8a64da70f179125fb90c2cN.exe	83
PID 4492 wrote to memory of 1676	4492	ec5ff7d57c8f97fe32b6d0e7eb027af061c3c20aef8a64da70f179125fb90c2cN.exe	83
PID 4492 wrote to memory of 1676	4492	ec5ff7d57c8f97fe32b6d0e7eb027af061c3c20aef8a64da70f179125fb90c2cN.exe	83
PID 4492 wrote to memory of 1056	4492	ec5ff7d57c8f97fe32b6d0e7eb027af061c3c20aef8a64da70f179125fb90c2cN.exe	89
PID 4492 wrote to memory of 1056	4492	ec5ff7d57c8f97fe32b6d0e7eb027af061c3c20aef8a64da70f179125fb90c2cN.exe	89
PID 4492 wrote to memory of 1056	4492	ec5ff7d57c8f97fe32b6d0e7eb027af061c3c20aef8a64da70f179125fb90c2cN.exe	89

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1676	attrib.exe

C:\Users\Admin\AppData\Local\Temp\ec5ff7d57c8f97fe32b6d0e7eb027af061c3c20aef8a64da70f179125fb90c2cN.exe
"C:\Users\Admin\AppData\Local\Temp\ec5ff7d57c8f97fe32b6d0e7eb027af061c3c20aef8a64da70f179125fb90c2cN.exe"
1⤵
- Checks computer location settings
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4492
- C:\Windows\SysWOW64\attrib.exe
  attrib +a +s +h +r C:\Windows\Debug\pwshost.exe
  2⤵
  - Sets file to hidden
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Views/modifies file attributes
  PID:1676
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\EC5FF7~1.EXE > nul
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1056

C:\Windows\Debug\pwshost.exe
C:\Windows\Debug\pwshost.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Checks processor information in registry
PID:3884

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

2

T1012

System Information Discovery

3

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

C:\Windows\debug\pwshost.exe

Filesize
68KB

MD5
d107755fbf4a7f6eb80609a37c777430

SHA1
339499b11192fa4d59c1324b7dcbf239318b0491

SHA256
ee22e2c7ae036bca854720302530e39b4d7e27f64efe1d07a7278562b5cf17a5

SHA512
1845745f5b7a653c5e3aac9b974bd66a63f9c0fead3390c96e3404949bee866af463571b45cb71650eb55b9ce51b66b28021538566048ecffd3b4e49cc04a980

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads