57e1b15cbdcc6fe5308ef05e1686bff246f3460b19d4f521e27a0579bd1738c5

Analysis

max time kernel
151s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
25/11/2022, 19:51

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General

Target

57e1b15cbdcc6fe5308ef05e1686bff246f3460b19d4f521e27a0579bd1738c5.exe
Size

284KB
MD5

04d173a9e11d4c4116d495df2d9a6660
SHA1

2d99f8c5c95a557644c7d6c303510520cb0ff255
SHA256

57e1b15cbdcc6fe5308ef05e1686bff246f3460b19d4f521e27a0579bd1738c5
SHA512

d77e16b2003284e22f6683ab529dc84908dd1dc0458b5126c3852bdf90a87308bec5b8b53181cd1aea830489f32fe6c91ba30bebf92412484a338c1a1103c60e
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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\13942 = "C:\\PROGRA~3\\LOCALS~1\\Temp\\msgiidbcf.bat"	svchost.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	svchost.exe

Executes dropped EXE 3 IoCs

pid	Process
3656	skyrpe.exe
2128	skyrpe.exe
4212	skyrpe.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3696-135-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3696-137-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3696-138-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3696-141-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3696-150-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3696-164-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2128-167-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2128-168-0x0000000000400000-0x000000000040B000-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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	57e1b15cbdcc6fe5308ef05e1686bff246f3460b19d4f521e27a0579bd1738c5.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-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\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 1080 set thread context of 3696	1080	57e1b15cbdcc6fe5308ef05e1686bff246f3460b19d4f521e27a0579bd1738c5.exe	87
PID 3656 set thread context of 2128	3656	skyrpe.exe	93
PID 3656 set thread context of 4212	3656	skyrpe.exe	94

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\PROGRA~3\LOCALS~1\Temp\msgiidbcf.bat	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
4212	skyrpe.exe
4212	skyrpe.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
4212	skyrpe.exe

Suspicious use of AdjustPrivilegeToken 50 IoCs

description	pid	Process
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe
Token: SeDebugPrivilege	2128	skyrpe.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1080	57e1b15cbdcc6fe5308ef05e1686bff246f3460b19d4f521e27a0579bd1738c5.exe
3696	57e1b15cbdcc6fe5308ef05e1686bff246f3460b19d4f521e27a0579bd1738c5.exe
3656	skyrpe.exe
2128	skyrpe.exe

Suspicious use of WriteProcessMemory 34 IoCs

description	pid	Process	procid_target
PID 1080 wrote to memory of 3696	1080	57e1b15cbdcc6fe5308ef05e1686bff246f3460b19d4f521e27a0579bd1738c5.exe	87
PID 1080 wrote to memory of 3696	1080	57e1b15cbdcc6fe5308ef05e1686bff246f3460b19d4f521e27a0579bd1738c5.exe	87
PID 1080 wrote to memory of 3696	1080	57e1b15cbdcc6fe5308ef05e1686bff246f3460b19d4f521e27a0579bd1738c5.exe	87
PID 1080 wrote to memory of 3696	1080	57e1b15cbdcc6fe5308ef05e1686bff246f3460b19d4f521e27a0579bd1738c5.exe	87
PID 1080 wrote to memory of 3696	1080	57e1b15cbdcc6fe5308ef05e1686bff246f3460b19d4f521e27a0579bd1738c5.exe	87
PID 1080 wrote to memory of 3696	1080	57e1b15cbdcc6fe5308ef05e1686bff246f3460b19d4f521e27a0579bd1738c5.exe	87
PID 1080 wrote to memory of 3696	1080	57e1b15cbdcc6fe5308ef05e1686bff246f3460b19d4f521e27a0579bd1738c5.exe	87
PID 1080 wrote to memory of 3696	1080	57e1b15cbdcc6fe5308ef05e1686bff246f3460b19d4f521e27a0579bd1738c5.exe	87
PID 3696 wrote to memory of 5096	3696	57e1b15cbdcc6fe5308ef05e1686bff246f3460b19d4f521e27a0579bd1738c5.exe	88
PID 3696 wrote to memory of 5096	3696	57e1b15cbdcc6fe5308ef05e1686bff246f3460b19d4f521e27a0579bd1738c5.exe	88
PID 3696 wrote to memory of 5096	3696	57e1b15cbdcc6fe5308ef05e1686bff246f3460b19d4f521e27a0579bd1738c5.exe	88
PID 5096 wrote to memory of 1456	5096	cmd.exe	91
PID 5096 wrote to memory of 1456	5096	cmd.exe	91
PID 5096 wrote to memory of 1456	5096	cmd.exe	91
PID 3696 wrote to memory of 3656	3696	57e1b15cbdcc6fe5308ef05e1686bff246f3460b19d4f521e27a0579bd1738c5.exe	92
PID 3696 wrote to memory of 3656	3696	57e1b15cbdcc6fe5308ef05e1686bff246f3460b19d4f521e27a0579bd1738c5.exe	92
PID 3696 wrote to memory of 3656	3696	57e1b15cbdcc6fe5308ef05e1686bff246f3460b19d4f521e27a0579bd1738c5.exe	92
PID 3656 wrote to memory of 2128	3656	skyrpe.exe	93
PID 3656 wrote to memory of 2128	3656	skyrpe.exe	93
PID 3656 wrote to memory of 2128	3656	skyrpe.exe	93
PID 3656 wrote to memory of 2128	3656	skyrpe.exe	93
PID 3656 wrote to memory of 2128	3656	skyrpe.exe	93
PID 3656 wrote to memory of 2128	3656	skyrpe.exe	93
PID 3656 wrote to memory of 2128	3656	skyrpe.exe	93
PID 3656 wrote to memory of 2128	3656	skyrpe.exe	93
PID 3656 wrote to memory of 4212	3656	skyrpe.exe	94
PID 3656 wrote to memory of 4212	3656	skyrpe.exe	94
PID 3656 wrote to memory of 4212	3656	skyrpe.exe	94
PID 3656 wrote to memory of 4212	3656	skyrpe.exe	94
PID 3656 wrote to memory of 4212	3656	skyrpe.exe	94
PID 3656 wrote to memory of 4212	3656	skyrpe.exe	94
PID 4212 wrote to memory of 3396	4212	skyrpe.exe	95
PID 4212 wrote to memory of 3396	4212	skyrpe.exe	95
PID 4212 wrote to memory of 3396	4212	skyrpe.exe	95

C:\Users\Admin\AppData\Local\Temp\57e1b15cbdcc6fe5308ef05e1686bff246f3460b19d4f521e27a0579bd1738c5.exe
"C:\Users\Admin\AppData\Local\Temp\57e1b15cbdcc6fe5308ef05e1686bff246f3460b19d4f521e27a0579bd1738c5.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1080
- C:\Users\Admin\AppData\Local\Temp\57e1b15cbdcc6fe5308ef05e1686bff246f3460b19d4f521e27a0579bd1738c5.exe
  "C:\Users\Admin\AppData\Local\Temp\57e1b15cbdcc6fe5308ef05e1686bff246f3460b19d4f521e27a0579bd1738c5.exe"
  2⤵
  - Checks computer location settings
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3696
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\VLMJS.bat" "
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:5096
  - - 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:1456
- - 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:3656
  - - 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:2128
  - - 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:4212
    - - 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:3396

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\VLMJS.bat

Filesize
139B

MD5
0654f004b2e314bad7f75867e91da37d

SHA1
4232c22e7340b12108d86e3cb35ed288a3dbc7f1

SHA256
ead325a060300a9606a3f0f14694be39a3e4006a60c6c3eb0bea5d6f98192249

SHA512
dda135cdfca90a742d42b4c7a5e7f5df6580ec428302a8f0c311f5b92eb08dda75774e0c7497110faffbe2dfa02b30d2dfe35ec2848a275f53be8d930c7aa553

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

Filesize
284KB

MD5
e80a828436452814a8a1871cf4f2a08d

SHA1
b9c9c22835ad0ff0689ca6d968895be0edb428f7

SHA256
27d9bdf225098d9260a9ebbda53c7969c701dcb6ab0e2f6324108b79e1bde0e5

SHA512
9b0aa6bb0dd37bad418d0d18b6def4e8ad7e660174cb33aff038035efcf3d3c03af0a16e77bfb729b1aee5e192ca152aaa89f211fb1d31a8917579cb3b38eace

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

Filesize
284KB

MD5
e80a828436452814a8a1871cf4f2a08d

SHA1
b9c9c22835ad0ff0689ca6d968895be0edb428f7

SHA256
27d9bdf225098d9260a9ebbda53c7969c701dcb6ab0e2f6324108b79e1bde0e5

SHA512
9b0aa6bb0dd37bad418d0d18b6def4e8ad7e660174cb33aff038035efcf3d3c03af0a16e77bfb729b1aee5e192ca152aaa89f211fb1d31a8917579cb3b38eace

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

Filesize
284KB

MD5
e80a828436452814a8a1871cf4f2a08d

SHA1
b9c9c22835ad0ff0689ca6d968895be0edb428f7

SHA256
27d9bdf225098d9260a9ebbda53c7969c701dcb6ab0e2f6324108b79e1bde0e5

SHA512
9b0aa6bb0dd37bad418d0d18b6def4e8ad7e660174cb33aff038035efcf3d3c03af0a16e77bfb729b1aee5e192ca152aaa89f211fb1d31a8917579cb3b38eace

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

Filesize
284KB

MD5
e80a828436452814a8a1871cf4f2a08d

SHA1
b9c9c22835ad0ff0689ca6d968895be0edb428f7

SHA256
27d9bdf225098d9260a9ebbda53c7969c701dcb6ab0e2f6324108b79e1bde0e5

SHA512
9b0aa6bb0dd37bad418d0d18b6def4e8ad7e660174cb33aff038035efcf3d3c03af0a16e77bfb729b1aee5e192ca152aaa89f211fb1d31a8917579cb3b38eace

Download Submit
memory/2128-168-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2128-167-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3396-169-0x0000000000680000-0x0000000000685000-memory.dmp

Filesize
20KB

Download
memory/3396-166-0x0000000000680000-0x0000000000685000-memory.dmp

Filesize
20KB

Download
memory/3396-165-0x0000000000760000-0x0000000000765000-memory.dmp

Filesize
20KB

Download
memory/3696-135-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3696-164-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3696-137-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3696-150-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3696-138-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3696-141-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4212-156-0x0000000000400000-0x0000000000405000-memory.dmp

Filesize
20KB

Download
memory/4212-163-0x0000000000400000-0x0000000000405000-memory.dmp

Filesize
20KB

Download