656983f86603152e5f5706b132f802bd42de5ad68923494c29d8a9e8bd5b730e

Analysis

max time kernel
118s
max time network
96s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
19/11/2024, 18:26

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General

Target

656983f86603152e5f5706b132f802bd42de5ad68923494c29d8a9e8bd5b730eN.exe
Size

308KB
MD5

de6a17d6e89d790f087c75e8c3fd1470
SHA1

89e9f07116b2cab77e0881498770d9185b3f4afc
SHA256

656983f86603152e5f5706b132f802bd42de5ad68923494c29d8a9e8bd5b730e
SHA512

3bf7b341f7c7f0058b872d5c39f49cfff9d0f4996d80640ef70dee938de939a78f5c41f5b9fb08c0e2accdc98b2a26f033e35c08022b2f5728ab72057a83c9d7
SSDEEP

3072:pxfHaRTE5TJf+jwB2ydTL5cFRu81Y2gK7UMCO05n05ghA/0Oz4ZhzSWlrSgswYCf:pZ6ogjnE8HmMCT0wJZhzAwfjRDT

Score

8^/10

discovery persistence upx

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	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\23230 = "C:\\PROGRA~3\\LOCALS~1\\Temp\\mscrjc.exe"	svchost.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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	656983f86603152e5f5706b132f802bd42de5ad68923494c29d8a9e8bd5b730eN.exe

Executes dropped EXE 3 IoCs

pid	Process
2504	skyrpe.exe
2512	skyrpe.exe
1484	skyrpe.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Skype = "C:\\Users\\Admin\\AppData\\Roaming\\skype\\skyrpe.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3312 set thread context of 2484	3312	656983f86603152e5f5706b132f802bd42de5ad68923494c29d8a9e8bd5b730eN.exe	95
PID 2504 set thread context of 2512	2504	skyrpe.exe	102
PID 2504 set thread context of 1484	2504	skyrpe.exe	103

UPX packed file 6 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/2484-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2484-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2484-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2484-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2484-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2512-66-0x0000000000400000-0x000000000040B000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\PROGRA~3\LOCALS~1\Temp\mscrjc.exe	svchost.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 8 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	656983f86603152e5f5706b132f802bd42de5ad68923494c29d8a9e8bd5b730eN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	skyrpe.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	skyrpe.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	skyrpe.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	656983f86603152e5f5706b132f802bd42de5ad68923494c29d8a9e8bd5b730eN.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1484	skyrpe.exe

Suspicious use of AdjustPrivilegeToken 36 IoCs

description	pid	Process
Token: SeDebugPrivilege	2512	skyrpe.exe
Token: SeDebugPrivilege	2512	skyrpe.exe
Token: SeDebugPrivilege	2512	skyrpe.exe
Token: SeDebugPrivilege	2512	skyrpe.exe
Token: SeDebugPrivilege	2512	skyrpe.exe
Token: SeDebugPrivilege	2512	skyrpe.exe
Token: SeDebugPrivilege	2512	skyrpe.exe
Token: SeDebugPrivilege	2512	skyrpe.exe
Token: SeDebugPrivilege	2512	skyrpe.exe
Token: SeDebugPrivilege	2512	skyrpe.exe
Token: SeDebugPrivilege	2512	skyrpe.exe
Token: SeDebugPrivilege	2512	skyrpe.exe
Token: SeDebugPrivilege	2512	skyrpe.exe
Token: SeDebugPrivilege	2512	skyrpe.exe
Token: SeDebugPrivilege	2512	skyrpe.exe
Token: SeDebugPrivilege	2512	skyrpe.exe
Token: SeDebugPrivilege	2512	skyrpe.exe
Token: SeDebugPrivilege	2512	skyrpe.exe
Token: SeDebugPrivilege	2512	skyrpe.exe
Token: SeDebugPrivilege	2512	skyrpe.exe
Token: SeDebugPrivilege	2512	skyrpe.exe
Token: SeDebugPrivilege	2512	skyrpe.exe
Token: SeDebugPrivilege	2512	skyrpe.exe
Token: SeDebugPrivilege	2512	skyrpe.exe
Token: SeDebugPrivilege	2512	skyrpe.exe
Token: SeDebugPrivilege	2512	skyrpe.exe
Token: SeDebugPrivilege	2512	skyrpe.exe
Token: SeDebugPrivilege	2512	skyrpe.exe
Token: SeDebugPrivilege	2512	skyrpe.exe
Token: SeDebugPrivilege	2512	skyrpe.exe
Token: SeDebugPrivilege	2512	skyrpe.exe
Token: SeDebugPrivilege	2512	skyrpe.exe
Token: SeDebugPrivilege	2512	skyrpe.exe
Token: SeDebugPrivilege	2512	skyrpe.exe
Token: SeDebugPrivilege	2512	skyrpe.exe
Token: SeDebugPrivilege	2512	skyrpe.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3312	656983f86603152e5f5706b132f802bd42de5ad68923494c29d8a9e8bd5b730eN.exe
2484	656983f86603152e5f5706b132f802bd42de5ad68923494c29d8a9e8bd5b730eN.exe
2504	skyrpe.exe
2512	skyrpe.exe

Suspicious use of WriteProcessMemory 35 IoCs

description	pid	Process	procid_target
PID 3312 wrote to memory of 2484	3312	656983f86603152e5f5706b132f802bd42de5ad68923494c29d8a9e8bd5b730eN.exe	95
PID 3312 wrote to memory of 2484	3312	656983f86603152e5f5706b132f802bd42de5ad68923494c29d8a9e8bd5b730eN.exe	95
PID 3312 wrote to memory of 2484	3312	656983f86603152e5f5706b132f802bd42de5ad68923494c29d8a9e8bd5b730eN.exe	95
PID 3312 wrote to memory of 2484	3312	656983f86603152e5f5706b132f802bd42de5ad68923494c29d8a9e8bd5b730eN.exe	95
PID 3312 wrote to memory of 2484	3312	656983f86603152e5f5706b132f802bd42de5ad68923494c29d8a9e8bd5b730eN.exe	95
PID 3312 wrote to memory of 2484	3312	656983f86603152e5f5706b132f802bd42de5ad68923494c29d8a9e8bd5b730eN.exe	95
PID 3312 wrote to memory of 2484	3312	656983f86603152e5f5706b132f802bd42de5ad68923494c29d8a9e8bd5b730eN.exe	95
PID 3312 wrote to memory of 2484	3312	656983f86603152e5f5706b132f802bd42de5ad68923494c29d8a9e8bd5b730eN.exe	95
PID 2484 wrote to memory of 2680	2484	656983f86603152e5f5706b132f802bd42de5ad68923494c29d8a9e8bd5b730eN.exe	96
PID 2484 wrote to memory of 2680	2484	656983f86603152e5f5706b132f802bd42de5ad68923494c29d8a9e8bd5b730eN.exe	96
PID 2484 wrote to memory of 2680	2484	656983f86603152e5f5706b132f802bd42de5ad68923494c29d8a9e8bd5b730eN.exe	96
PID 2680 wrote to memory of 3976	2680	cmd.exe	99
PID 2680 wrote to memory of 3976	2680	cmd.exe	99
PID 2680 wrote to memory of 3976	2680	cmd.exe	99
PID 2484 wrote to memory of 2504	2484	656983f86603152e5f5706b132f802bd42de5ad68923494c29d8a9e8bd5b730eN.exe	100
PID 2484 wrote to memory of 2504	2484	656983f86603152e5f5706b132f802bd42de5ad68923494c29d8a9e8bd5b730eN.exe	100
PID 2484 wrote to memory of 2504	2484	656983f86603152e5f5706b132f802bd42de5ad68923494c29d8a9e8bd5b730eN.exe	100
PID 2504 wrote to memory of 2512	2504	skyrpe.exe	102
PID 2504 wrote to memory of 2512	2504	skyrpe.exe	102
PID 2504 wrote to memory of 2512	2504	skyrpe.exe	102
PID 2504 wrote to memory of 2512	2504	skyrpe.exe	102
PID 2504 wrote to memory of 2512	2504	skyrpe.exe	102
PID 2504 wrote to memory of 2512	2504	skyrpe.exe	102
PID 2504 wrote to memory of 2512	2504	skyrpe.exe	102
PID 2504 wrote to memory of 2512	2504	skyrpe.exe	102
PID 2504 wrote to memory of 1484	2504	skyrpe.exe	103
PID 2504 wrote to memory of 1484	2504	skyrpe.exe	103
PID 2504 wrote to memory of 1484	2504	skyrpe.exe	103
PID 2504 wrote to memory of 1484	2504	skyrpe.exe	103
PID 2504 wrote to memory of 1484	2504	skyrpe.exe	103
PID 2504 wrote to memory of 1484	2504	skyrpe.exe	103
PID 2504 wrote to memory of 1484	2504	skyrpe.exe	103
PID 1484 wrote to memory of 2012	1484	skyrpe.exe	104
PID 1484 wrote to memory of 2012	1484	skyrpe.exe	104
PID 1484 wrote to memory of 2012	1484	skyrpe.exe	104

C:\Users\Admin\AppData\Local\Temp\656983f86603152e5f5706b132f802bd42de5ad68923494c29d8a9e8bd5b730eN.exe
"C:\Users\Admin\AppData\Local\Temp\656983f86603152e5f5706b132f802bd42de5ad68923494c29d8a9e8bd5b730eN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3312
- C:\Users\Admin\AppData\Local\Temp\656983f86603152e5f5706b132f802bd42de5ad68923494c29d8a9e8bd5b730eN.exe
  "C:\Users\Admin\AppData\Local\Temp\656983f86603152e5f5706b132f802bd42de5ad68923494c29d8a9e8bd5b730eN.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2484
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\EQVRF.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2680
  - - C:\Windows\SysWOW64\reg.exe
      REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Skype" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe" /f
      4⤵
      Adds Run key to start application
      System Location Discovery: System Language Discovery
      PID:3976
- - C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe
    "C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2504
  - - C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe
      "C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:2512
  - - C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe
      "C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious behavior: MapViewOfSection
      Suspicious use of WriteProcessMemory
      PID:1484
    - - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\SysWOW64\svchost.exe
        5⤵
        Adds policy Run key to start application
        Drops file in Program Files directory
        System Location Discovery: System Language Discovery
        
        PID:2012

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\EQVRF.txt

Filesize
139B

MD5
0654f004b2e314bad7f75867e91da37d

SHA1
4232c22e7340b12108d86e3cb35ed288a3dbc7f1

SHA256
ead325a060300a9606a3f0f14694be39a3e4006a60c6c3eb0bea5d6f98192249

SHA512
dda135cdfca90a742d42b4c7a5e7f5df6580ec428302a8f0c311f5b92eb08dda75774e0c7497110faffbe2dfa02b30d2dfe35ec2848a275f53be8d930c7aa553

Download Submit
C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe

Filesize
308KB

MD5
d13a51dc71d51caaa5390b08a072f099

SHA1
77a2c7507fa6cdd80ba4cbd025bf243fbe671095

SHA256
8522212f401c3916647c4d4825d307f885fb2e22e602d6d313eb63fa9de5cd4b

SHA512
65ac0bbd93d3a9f0aa0674b0bf188d3efa844d4d175efd587c69d3e629153d720d13d8fc86b378a56639bd6073c2ce6eb96c47c30dca8d86e612459b881db265

Download Submit
memory/1484-47-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/1484-53-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/2012-62-0x0000000000C10000-0x0000000000C15000-memory.dmp

Filesize
20KB

Download
memory/2484-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2484-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2484-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2484-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2484-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2504-57-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/2504-37-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/2504-38-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/2504-43-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/2512-66-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3312-6-0x0000000002BA0000-0x0000000002BA1000-memory.dmp

Filesize
4KB

Download
memory/3312-4-0x0000000002320000-0x0000000002321000-memory.dmp

Filesize
4KB

Download
memory/3312-5-0x0000000002B90000-0x0000000002B91000-memory.dmp

Filesize
4KB

Download
memory/3312-3-0x0000000002330000-0x0000000002331000-memory.dmp

Filesize
4KB

Download
memory/3312-2-0x0000000002320000-0x0000000002321000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads