aa6589284e293185b299ab1925aed8712a35bd40b1a7c4e3b54bccad8247bebf

Analysis

max time kernel
157s
max time network
165s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
01-10-2022 19:49

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General

Target

aa6589284e293185b299ab1925aed8712a35bd40b1a7c4e3b54bccad8247bebf.exe
Size

284KB
MD5

652f1d03ec3ac30fe796c586f6297580
SHA1

86b8c0bd2a1f976886d9302ba94f2149db7c4682
SHA256

aa6589284e293185b299ab1925aed8712a35bd40b1a7c4e3b54bccad8247bebf
SHA512

3807113ac0b42f19390bf351ba50097364615677a47b54b7af0b65b963f4697dcbbf1d547344e8fcc74d4ac66fe5fbd330039e462b5ef4b3caef2e056039ceb5
SSDEEP

3072:mSQ0EWVwZhKxC5Rt+k60Zh+qw6PYSsszfHZTZJ2lC:mPA6wxmuJspr2l

Score

8^/10

persistence upx

Malware Config

Signatures

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

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\5517 = "C:\\PROGRA~3\\LOCALS~1\\Temp\\msshelam.scr"	svchost.exe

Executes dropped EXE 3 IoCs

pid	Process
860	skyrpe.exe
1816	skyrpe.exe
4336	skyrpe.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4920-135-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4920-137-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4920-138-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4920-141-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4920-150-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4920-162-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1816-167-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1816-169-0x0000000000400000-0x000000000040B000-memory.dmp	upx

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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	aa6589284e293185b299ab1925aed8712a35bd40b1a7c4e3b54bccad8247bebf.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Skype = "C:\\Users\\Admin\\AppData\\Roaming\\skype\\skyrpe.exe"	reg.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\disk\enum	skyrpe.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	skyrpe.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3068 set thread context of 4920	3068	aa6589284e293185b299ab1925aed8712a35bd40b1a7c4e3b54bccad8247bebf.exe	82
PID 860 set thread context of 1816	860	skyrpe.exe	94
PID 860 set thread context of 4336	860	skyrpe.exe	95

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\PROGRA~3\LOCALS~1\Temp\msshelam.scr	svchost.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4336	skyrpe.exe
4336	skyrpe.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
4336	skyrpe.exe

Suspicious use of AdjustPrivilegeToken 56 IoCs

description	pid	Process
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe
Token: SeDebugPrivilege	1816	skyrpe.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3068	aa6589284e293185b299ab1925aed8712a35bd40b1a7c4e3b54bccad8247bebf.exe
4920	aa6589284e293185b299ab1925aed8712a35bd40b1a7c4e3b54bccad8247bebf.exe
860	skyrpe.exe
1816	skyrpe.exe

Suspicious use of WriteProcessMemory 34 IoCs

description	pid	Process	procid_target
PID 3068 wrote to memory of 4920	3068	aa6589284e293185b299ab1925aed8712a35bd40b1a7c4e3b54bccad8247bebf.exe	82
PID 3068 wrote to memory of 4920	3068	aa6589284e293185b299ab1925aed8712a35bd40b1a7c4e3b54bccad8247bebf.exe	82
PID 3068 wrote to memory of 4920	3068	aa6589284e293185b299ab1925aed8712a35bd40b1a7c4e3b54bccad8247bebf.exe	82
PID 3068 wrote to memory of 4920	3068	aa6589284e293185b299ab1925aed8712a35bd40b1a7c4e3b54bccad8247bebf.exe	82
PID 3068 wrote to memory of 4920	3068	aa6589284e293185b299ab1925aed8712a35bd40b1a7c4e3b54bccad8247bebf.exe	82
PID 3068 wrote to memory of 4920	3068	aa6589284e293185b299ab1925aed8712a35bd40b1a7c4e3b54bccad8247bebf.exe	82
PID 3068 wrote to memory of 4920	3068	aa6589284e293185b299ab1925aed8712a35bd40b1a7c4e3b54bccad8247bebf.exe	82
PID 3068 wrote to memory of 4920	3068	aa6589284e293185b299ab1925aed8712a35bd40b1a7c4e3b54bccad8247bebf.exe	82
PID 4920 wrote to memory of 2472	4920	aa6589284e293185b299ab1925aed8712a35bd40b1a7c4e3b54bccad8247bebf.exe	83
PID 4920 wrote to memory of 2472	4920	aa6589284e293185b299ab1925aed8712a35bd40b1a7c4e3b54bccad8247bebf.exe	83
PID 4920 wrote to memory of 2472	4920	aa6589284e293185b299ab1925aed8712a35bd40b1a7c4e3b54bccad8247bebf.exe	83
PID 2472 wrote to memory of 5004	2472	cmd.exe	86
PID 2472 wrote to memory of 5004	2472	cmd.exe	86
PID 2472 wrote to memory of 5004	2472	cmd.exe	86
PID 4920 wrote to memory of 860	4920	aa6589284e293185b299ab1925aed8712a35bd40b1a7c4e3b54bccad8247bebf.exe	87
PID 4920 wrote to memory of 860	4920	aa6589284e293185b299ab1925aed8712a35bd40b1a7c4e3b54bccad8247bebf.exe	87
PID 4920 wrote to memory of 860	4920	aa6589284e293185b299ab1925aed8712a35bd40b1a7c4e3b54bccad8247bebf.exe	87
PID 860 wrote to memory of 1816	860	skyrpe.exe	94
PID 860 wrote to memory of 1816	860	skyrpe.exe	94
PID 860 wrote to memory of 1816	860	skyrpe.exe	94
PID 860 wrote to memory of 1816	860	skyrpe.exe	94
PID 860 wrote to memory of 1816	860	skyrpe.exe	94
PID 860 wrote to memory of 1816	860	skyrpe.exe	94
PID 860 wrote to memory of 1816	860	skyrpe.exe	94
PID 860 wrote to memory of 1816	860	skyrpe.exe	94
PID 860 wrote to memory of 4336	860	skyrpe.exe	95
PID 860 wrote to memory of 4336	860	skyrpe.exe	95
PID 860 wrote to memory of 4336	860	skyrpe.exe	95
PID 860 wrote to memory of 4336	860	skyrpe.exe	95
PID 860 wrote to memory of 4336	860	skyrpe.exe	95
PID 860 wrote to memory of 4336	860	skyrpe.exe	95
PID 4336 wrote to memory of 4412	4336	skyrpe.exe	96
PID 4336 wrote to memory of 4412	4336	skyrpe.exe	96
PID 4336 wrote to memory of 4412	4336	skyrpe.exe	96

C:\Users\Admin\AppData\Local\Temp\aa6589284e293185b299ab1925aed8712a35bd40b1a7c4e3b54bccad8247bebf.exe
"C:\Users\Admin\AppData\Local\Temp\aa6589284e293185b299ab1925aed8712a35bd40b1a7c4e3b54bccad8247bebf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3068
- C:\Users\Admin\AppData\Local\Temp\aa6589284e293185b299ab1925aed8712a35bd40b1a7c4e3b54bccad8247bebf.exe
  "C:\Users\Admin\AppData\Local\Temp\aa6589284e293185b299ab1925aed8712a35bd40b1a7c4e3b54bccad8247bebf.exe"
  2⤵
  - Checks computer location settings
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4920
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\XKMHF.bat" "
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2472
  - - 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
      PID:5004
- - C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe
    "C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:860
  - - C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe
      "C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:1816
  - - C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe
      "C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe"
      4⤵
      Executes dropped EXE
      Maps connected drives based on registry
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of WriteProcessMemory
      PID:4336
    - - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\syswow64\svchost.exe
        5⤵
        Adds policy Run key to start application
        Drops file in Program Files directory
        
        PID:4412

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\XKMHF.bat

Filesize
139B

MD5
0654f004b2e314bad7f75867e91da37d

SHA1
4232c22e7340b12108d86e3cb35ed288a3dbc7f1

SHA256
ead325a060300a9606a3f0f14694be39a3e4006a60c6c3eb0bea5d6f98192249

SHA512
dda135cdfca90a742d42b4c7a5e7f5df6580ec428302a8f0c311f5b92eb08dda75774e0c7497110faffbe2dfa02b30d2dfe35ec2848a275f53be8d930c7aa553

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

Filesize
284KB

MD5
bdaf7ccdafebfb0e8f5f7577c0077208

SHA1
b1d769d90a3e160b1c58637556d7081f582d5d25

SHA256
eae13c5e90b0ba25f33bd6fdd4cb995c01d7ff8ae8336a64291a9691b30107f4

SHA512
094fec17be970050ac9962b8fb9f33e8ef6ac4f529b806b686b4204f8dd4508c15a03844355d11326ea847abea50fbdfb22ec357e93bebc1e785b84a0bf88cf4

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

Filesize
284KB

MD5
bdaf7ccdafebfb0e8f5f7577c0077208

SHA1
b1d769d90a3e160b1c58637556d7081f582d5d25

SHA256
eae13c5e90b0ba25f33bd6fdd4cb995c01d7ff8ae8336a64291a9691b30107f4

SHA512
094fec17be970050ac9962b8fb9f33e8ef6ac4f529b806b686b4204f8dd4508c15a03844355d11326ea847abea50fbdfb22ec357e93bebc1e785b84a0bf88cf4

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

Filesize
284KB

MD5
bdaf7ccdafebfb0e8f5f7577c0077208

SHA1
b1d769d90a3e160b1c58637556d7081f582d5d25

SHA256
eae13c5e90b0ba25f33bd6fdd4cb995c01d7ff8ae8336a64291a9691b30107f4

SHA512
094fec17be970050ac9962b8fb9f33e8ef6ac4f529b806b686b4204f8dd4508c15a03844355d11326ea847abea50fbdfb22ec357e93bebc1e785b84a0bf88cf4

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

Filesize
284KB

MD5
bdaf7ccdafebfb0e8f5f7577c0077208

SHA1
b1d769d90a3e160b1c58637556d7081f582d5d25

SHA256
eae13c5e90b0ba25f33bd6fdd4cb995c01d7ff8ae8336a64291a9691b30107f4

SHA512
094fec17be970050ac9962b8fb9f33e8ef6ac4f529b806b686b4204f8dd4508c15a03844355d11326ea847abea50fbdfb22ec357e93bebc1e785b84a0bf88cf4

Download Submit
memory/860-145-0x0000000000000000-mapping.dmp

Download
memory/1816-151-0x0000000000000000-mapping.dmp

Download
memory/1816-167-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1816-169-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2472-142-0x0000000000000000-mapping.dmp

Download
memory/4336-164-0x0000000000400000-0x0000000000405000-memory.dmp

Filesize
20KB

Download
memory/4336-154-0x0000000000000000-mapping.dmp

Download
memory/4336-156-0x0000000000400000-0x0000000000405000-memory.dmp

Filesize
20KB

Download
memory/4412-165-0x00000000005E0000-0x00000000005E5000-memory.dmp

Filesize
20KB

Download
memory/4412-163-0x0000000000000000-mapping.dmp

Download
memory/4412-166-0x0000000000500000-0x0000000000505000-memory.dmp

Filesize
20KB

Download
memory/4412-168-0x0000000000500000-0x0000000000505000-memory.dmp

Filesize
20KB

Download
memory/4920-137-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4920-134-0x0000000000000000-mapping.dmp

Download
memory/4920-135-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4920-162-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4920-150-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4920-138-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4920-141-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/5004-144-0x0000000000000000-mapping.dmp

Download