23b641e5eecec19208e2c8d9d0a7871a2fdb2ef285c639af1c172468ad4a31b5

General

Target

23b641e5eecec19208e2c8d9d0a7871a2fdb2ef285c639af1c172468ad4a31b5N.exe
Size

84KB
MD5

09b4f0afd517a3d0def55563be233e90
SHA1

40f1ca57a69abb9d149efc87b189bb6ddf87eb8c
SHA256

23b641e5eecec19208e2c8d9d0a7871a2fdb2ef285c639af1c172468ad4a31b5
SHA512

85b4f954d9d08ffb7ffc493e5bc8a7e94390c180883e4068455552caa1e2a34997912391ebc502c31da18e618fce3fb54bdd6c13bc7b41915330a5e265211988
SSDEEP

1536:bDcWLfIbgEp10gyXVdtnTHNWnnn622222K:bDXL0n0gyXVd1re2222K

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
472	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-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation	23b641e5eecec19208e2c8d9d0a7871a2fdb2ef285c639af1c172468ad4a31b5N.exe

Executes dropped EXE 1 IoCs

pid	Process
416	wmahost.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\wmahost.exe	23b641e5eecec19208e2c8d9d0a7871a2fdb2ef285c639af1c172468ad4a31b5N.exe
File opened for modification	C:\Windows\Debug\wmahost.exe	23b641e5eecec19208e2c8d9d0a7871a2fdb2ef285c639af1c172468ad4a31b5N.exe
File opened for modification	C:\Windows\Debug\wmahost.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	23b641e5eecec19208e2c8d9d0a7871a2fdb2ef285c639af1c172468ad4a31b5N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wmahost.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 opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	wmahost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	wmahost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	3152	23b641e5eecec19208e2c8d9d0a7871a2fdb2ef285c639af1c172468ad4a31b5N.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3152 wrote to memory of 472	3152	23b641e5eecec19208e2c8d9d0a7871a2fdb2ef285c639af1c172468ad4a31b5N.exe	82
PID 3152 wrote to memory of 472	3152	23b641e5eecec19208e2c8d9d0a7871a2fdb2ef285c639af1c172468ad4a31b5N.exe	82
PID 3152 wrote to memory of 472	3152	23b641e5eecec19208e2c8d9d0a7871a2fdb2ef285c639af1c172468ad4a31b5N.exe	82
PID 3152 wrote to memory of 3620	3152	23b641e5eecec19208e2c8d9d0a7871a2fdb2ef285c639af1c172468ad4a31b5N.exe	85
PID 3152 wrote to memory of 3620	3152	23b641e5eecec19208e2c8d9d0a7871a2fdb2ef285c639af1c172468ad4a31b5N.exe	85
PID 3152 wrote to memory of 3620	3152	23b641e5eecec19208e2c8d9d0a7871a2fdb2ef285c639af1c172468ad4a31b5N.exe	85

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
472	attrib.exe

C:\Users\Admin\AppData\Local\Temp\23b641e5eecec19208e2c8d9d0a7871a2fdb2ef285c639af1c172468ad4a31b5N.exe
"C:\Users\Admin\AppData\Local\Temp\23b641e5eecec19208e2c8d9d0a7871a2fdb2ef285c639af1c172468ad4a31b5N.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:3152
- C:\Windows\SysWOW64\attrib.exe
  attrib +a +s +h +r C:\Windows\Debug\wmahost.exe
  2⤵
  - Sets file to hidden
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Views/modifies file attributes
  PID:472
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\23B641~1.EXE > nul
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3620

C:\Windows\Debug\wmahost.exe
C:\Windows\Debug\wmahost.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Checks processor information in registry
PID:416

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\wmahost.exe

Filesize
84KB

MD5
a4a3c314a468e2c14605ba45af966f36

SHA1
f18ba359a52c74267181fd4077865c5d5a88d8cc

SHA256
e57fc10220b8ec288f9a9014be2e77830f587f70df55f781a8e9273fb05ba019

SHA512
533b0271f98915787e73c5ebe75403688cb6b1ad2a82a0dfa25922cd0cec0c69652f500d02ee40d93036146fb1f575efd061b27e9766d4c817397610448227cd

Download Submit
memory/416-6-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/3152-0-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/3152-5-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads