1d52de6ab23e08662fe5f13d411dd50be238148822501e21db7fd45f07e176cb

General

Target

048cbc4501803809ea6a26f22b88ac1e.exe
Size

326KB
MD5

048cbc4501803809ea6a26f22b88ac1e
SHA1

a78d84e478d61b094a6bb49ec94305bd0a3ab013
SHA256

1d52de6ab23e08662fe5f13d411dd50be238148822501e21db7fd45f07e176cb
SHA512

a4a711060a00ce1d22c28745bd43dfa86576315c1acc53e88543958c260c9118ccaf70cd8e72cbf275ec54c2b1abaa6386715c6e1cdbe068f5351d4a87321160
SSDEEP

6144:tDH8L346R6eMex/g2Dz3yUMfyqJgrq6/7DCc1zTYJRNV+lqVCWluj:hHN6XMu/t3cotQwqVjlu

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

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	048cbc4501803809ea6a26f22b88ac1e.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\OBRKQP = "C:\\Windows\\SysWOW64\\WsmResw.exe"	048cbc4501803809ea6a26f22b88ac1e.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	WsmResw.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	048cbc4501803809ea6a26f22b88ac1e.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-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation	WsmResw.exe

Executes dropped EXE 1 IoCs

pid	Process
540	WsmResw.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	048cbc4501803809ea6a26f22b88ac1e.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\WsmResw.exe	048cbc4501803809ea6a26f22b88ac1e.exe
File opened for modification	C:\Windows\SysWOW64\WsmResw.exe	048cbc4501803809ea6a26f22b88ac1e.exe

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

System Information Discovery
T1082

Gathers network information 2 TTPs 1 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

T1082

Command and Scripting Interpreter

T1059

pid	Process
1672	ipconfig.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
908	048cbc4501803809ea6a26f22b88ac1e.exe
908	048cbc4501803809ea6a26f22b88ac1e.exe
908	048cbc4501803809ea6a26f22b88ac1e.exe
908	048cbc4501803809ea6a26f22b88ac1e.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	908	048cbc4501803809ea6a26f22b88ac1e.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
540	WsmResw.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 908 wrote to memory of 540	908	048cbc4501803809ea6a26f22b88ac1e.exe	92
PID 908 wrote to memory of 540	908	048cbc4501803809ea6a26f22b88ac1e.exe	92
PID 908 wrote to memory of 540	908	048cbc4501803809ea6a26f22b88ac1e.exe	92
PID 908 wrote to memory of 2724	908	048cbc4501803809ea6a26f22b88ac1e.exe	94
PID 908 wrote to memory of 2724	908	048cbc4501803809ea6a26f22b88ac1e.exe	94
PID 908 wrote to memory of 2724	908	048cbc4501803809ea6a26f22b88ac1e.exe	94
PID 540 wrote to memory of 1672	540	WsmResw.exe	97
PID 540 wrote to memory of 1672	540	WsmResw.exe	97
PID 540 wrote to memory of 1672	540	WsmResw.exe	97

C:\Users\Admin\AppData\Local\Temp\048cbc4501803809ea6a26f22b88ac1e.exe
"C:\Users\Admin\AppData\Local\Temp\048cbc4501803809ea6a26f22b88ac1e.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:908
- C:\Windows\SysWOW64\WsmResw.exe
  C:\Windows\SysWOW64\WsmResw.exe
  2⤵
  - Drops file in Drivers directory
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:540
- - C:\Windows\SysWOW64\ipconfig.exe
    "C:\Windows\system32\ipconfig.exe" /flushdns
    3⤵
    - Gathers network information
    PID:1672
- C:\Windows\SysWOW64\cmd.exe
  /c C:\Users\Admin\AppData\Local\Temp\~unins3734.bat "C:\Users\Admin\AppData\Local\Temp\048cbc4501803809ea6a26f22b88ac1e.exe"
  2⤵
  PID:2724

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

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\~unins3734.bat

Filesize
49B

MD5
9e0a2f5ab30517809b95a1ff1dd98c53

SHA1
5c1eefdf10e67d1e9216e2e3f5e92352d583c9ce

SHA256
97ac9fee75a1f7b63b3115e9c4fb9dda80b1caba26d2fb51325670dee261fe32

SHA512
e959cc1fd48fb1cccf135a697924c775a3812bab211fc7f9b00c5a9d617261d84c5d6f7cb548774c1e8f46811b06ca39c5603d0e10cbcb7b805f9abbe49b9b42

Download Submit
C:\Users\Adminxplore.exe

Filesize
89B

MD5
2bd83f0dd1740fff26d071dcdd59af56

SHA1
221e9e64a79255053a9e4da65957a7bdd6bc045b

SHA256
70a676e21716581858de2753ea5eec8befe6741ed299216f65a13c3853805c05

SHA512
fe632b63b8b850cc83f0eb2a114de60693ec0dd8b62fe8f0938b42526557889f48357da0ca3bb06bed1ad68562280023a69b54d93cff8b7266bb8ebb63ac903c

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

Filesize
104KB

MD5
1944bce4207782a6d5cdc977ddce003f

SHA1
7775c2c5e95795f6054d96e1ad490eecda5a94dc

SHA256
4039b6127df409d39501c99b49a52e4b73e962021c518ac0b01878e45d88f329

SHA512
e688a74a39d1ffc7ed987705f06ab29c4ebef16b3c9241f08e8950a9c1a0972cf74dbc4bd6b8249cf25ac1d4515ce402a2e706afef072f699a87d11abb8e505e

Download Submit
memory/908-0-0x0000000000400000-0x0000000000497000-memory.dmp

Filesize
604KB

Download
memory/908-1-0x0000000000400000-0x0000000000497000-memory.dmp

Filesize
604KB

Download
memory/908-2-0x0000000002190000-0x000000000221F000-memory.dmp

Filesize
572KB

Download
memory/908-6-0x0000000000530000-0x0000000000531000-memory.dmp

Filesize
4KB

Download
memory/908-27-0x0000000000400000-0x0000000000497000-memory.dmp

Filesize
604KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads