88c4f2e16d7cc7ba77008b7239e9ec2439d612ca80107674e7563e4c83a20700

Analysis

max time kernel
150s
max time network
140s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
28/10/2022, 21:56

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General

Target

88c4f2e16d7cc7ba77008b7239e9ec2439d612ca80107674e7563e4c83a20700.exe
Size

284KB
MD5

0ead4ea2d44a0207641ed37de4366360
SHA1

e062d6ea408dd3cf504faf896f8d2f0f4fc3c24b
SHA256

88c4f2e16d7cc7ba77008b7239e9ec2439d612ca80107674e7563e4c83a20700
SHA512

09d12657097ac30a47709c16b2825ad864638c6aa9c7960a3705edd7db17e413523692bd67954ce1407b053358acc831e46db0ffb82bc236a4324bd08d733e06
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\13930 = "C:\\PROGRA~3\\LOCALS~1\\Temp\\msyyxkq.com"	svchost.exe

Executes dropped EXE 3 IoCs

pid	Process
1756	skyrpe.exe
1396	skyrpe.exe
1640	skyrpe.exe

UPX packed file 10 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1760-57-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1760-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1760-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1760-63-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1760-64-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1760-67-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1760-81-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1760-101-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1396-102-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1396-108-0x0000000000400000-0x000000000040B000-memory.dmp	upx

Loads dropped DLL 5 IoCs

pid	Process
1760	88c4f2e16d7cc7ba77008b7239e9ec2439d612ca80107674e7563e4c83a20700.exe
1760	88c4f2e16d7cc7ba77008b7239e9ec2439d612ca80107674e7563e4c83a20700.exe
1760	88c4f2e16d7cc7ba77008b7239e9ec2439d612ca80107674e7563e4c83a20700.exe
1760	88c4f2e16d7cc7ba77008b7239e9ec2439d612ca80107674e7563e4c83a20700.exe
1760	88c4f2e16d7cc7ba77008b7239e9ec2439d612ca80107674e7563e4c83a20700.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-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\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 value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	skyrpe.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\disk\enum	skyrpe.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 960 set thread context of 1760	960	88c4f2e16d7cc7ba77008b7239e9ec2439d612ca80107674e7563e4c83a20700.exe	27
PID 1756 set thread context of 1396	1756	skyrpe.exe	32
PID 1756 set thread context of 1640	1756	skyrpe.exe	33

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\PROGRA~3\LOCALS~1\Temp\msyyxkq.com	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 1 IoCs

pid	Process
1640	skyrpe.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1640	skyrpe.exe

Suspicious use of AdjustPrivilegeToken 49 IoCs

description	pid	Process
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe
Token: SeDebugPrivilege	1396	skyrpe.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
960	88c4f2e16d7cc7ba77008b7239e9ec2439d612ca80107674e7563e4c83a20700.exe
1760	88c4f2e16d7cc7ba77008b7239e9ec2439d612ca80107674e7563e4c83a20700.exe
1756	skyrpe.exe
1396	skyrpe.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 960 wrote to memory of 1760	960	88c4f2e16d7cc7ba77008b7239e9ec2439d612ca80107674e7563e4c83a20700.exe	27
PID 960 wrote to memory of 1760	960	88c4f2e16d7cc7ba77008b7239e9ec2439d612ca80107674e7563e4c83a20700.exe	27
PID 960 wrote to memory of 1760	960	88c4f2e16d7cc7ba77008b7239e9ec2439d612ca80107674e7563e4c83a20700.exe	27
PID 960 wrote to memory of 1760	960	88c4f2e16d7cc7ba77008b7239e9ec2439d612ca80107674e7563e4c83a20700.exe	27
PID 960 wrote to memory of 1760	960	88c4f2e16d7cc7ba77008b7239e9ec2439d612ca80107674e7563e4c83a20700.exe	27
PID 960 wrote to memory of 1760	960	88c4f2e16d7cc7ba77008b7239e9ec2439d612ca80107674e7563e4c83a20700.exe	27
PID 960 wrote to memory of 1760	960	88c4f2e16d7cc7ba77008b7239e9ec2439d612ca80107674e7563e4c83a20700.exe	27
PID 960 wrote to memory of 1760	960	88c4f2e16d7cc7ba77008b7239e9ec2439d612ca80107674e7563e4c83a20700.exe	27
PID 1760 wrote to memory of 512	1760	88c4f2e16d7cc7ba77008b7239e9ec2439d612ca80107674e7563e4c83a20700.exe	28
PID 1760 wrote to memory of 512	1760	88c4f2e16d7cc7ba77008b7239e9ec2439d612ca80107674e7563e4c83a20700.exe	28
PID 1760 wrote to memory of 512	1760	88c4f2e16d7cc7ba77008b7239e9ec2439d612ca80107674e7563e4c83a20700.exe	28
PID 1760 wrote to memory of 512	1760	88c4f2e16d7cc7ba77008b7239e9ec2439d612ca80107674e7563e4c83a20700.exe	28
PID 512 wrote to memory of 1680	512	cmd.exe	30
PID 512 wrote to memory of 1680	512	cmd.exe	30
PID 512 wrote to memory of 1680	512	cmd.exe	30
PID 512 wrote to memory of 1680	512	cmd.exe	30
PID 1760 wrote to memory of 1756	1760	88c4f2e16d7cc7ba77008b7239e9ec2439d612ca80107674e7563e4c83a20700.exe	31
PID 1760 wrote to memory of 1756	1760	88c4f2e16d7cc7ba77008b7239e9ec2439d612ca80107674e7563e4c83a20700.exe	31
PID 1760 wrote to memory of 1756	1760	88c4f2e16d7cc7ba77008b7239e9ec2439d612ca80107674e7563e4c83a20700.exe	31
PID 1760 wrote to memory of 1756	1760	88c4f2e16d7cc7ba77008b7239e9ec2439d612ca80107674e7563e4c83a20700.exe	31
PID 1756 wrote to memory of 1396	1756	skyrpe.exe	32
PID 1756 wrote to memory of 1396	1756	skyrpe.exe	32
PID 1756 wrote to memory of 1396	1756	skyrpe.exe	32
PID 1756 wrote to memory of 1396	1756	skyrpe.exe	32
PID 1756 wrote to memory of 1396	1756	skyrpe.exe	32
PID 1756 wrote to memory of 1396	1756	skyrpe.exe	32
PID 1756 wrote to memory of 1396	1756	skyrpe.exe	32
PID 1756 wrote to memory of 1396	1756	skyrpe.exe	32
PID 1756 wrote to memory of 1640	1756	skyrpe.exe	33
PID 1756 wrote to memory of 1640	1756	skyrpe.exe	33
PID 1756 wrote to memory of 1640	1756	skyrpe.exe	33
PID 1756 wrote to memory of 1640	1756	skyrpe.exe	33
PID 1756 wrote to memory of 1640	1756	skyrpe.exe	33
PID 1756 wrote to memory of 1640	1756	skyrpe.exe	33
PID 1756 wrote to memory of 1640	1756	skyrpe.exe	33
PID 1640 wrote to memory of 1280	1640	skyrpe.exe	34
PID 1640 wrote to memory of 1280	1640	skyrpe.exe	34
PID 1640 wrote to memory of 1280	1640	skyrpe.exe	34
PID 1640 wrote to memory of 1280	1640	skyrpe.exe	34

C:\Users\Admin\AppData\Local\Temp\88c4f2e16d7cc7ba77008b7239e9ec2439d612ca80107674e7563e4c83a20700.exe
"C:\Users\Admin\AppData\Local\Temp\88c4f2e16d7cc7ba77008b7239e9ec2439d612ca80107674e7563e4c83a20700.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:960
- C:\Users\Admin\AppData\Local\Temp\88c4f2e16d7cc7ba77008b7239e9ec2439d612ca80107674e7563e4c83a20700.exe
  "C:\Users\Admin\AppData\Local\Temp\88c4f2e16d7cc7ba77008b7239e9ec2439d612ca80107674e7563e4c83a20700.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1760
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\LHGUB.bat" "
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:512
  - - 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:1680
- - 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:1756
  - - 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:1396
  - - 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:1640
    - - 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:1280

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\LHGUB.bat

Filesize
139B

MD5
0654f004b2e314bad7f75867e91da37d

SHA1
4232c22e7340b12108d86e3cb35ed288a3dbc7f1

SHA256
ead325a060300a9606a3f0f14694be39a3e4006a60c6c3eb0bea5d6f98192249

SHA512
dda135cdfca90a742d42b4c7a5e7f5df6580ec428302a8f0c311f5b92eb08dda75774e0c7497110faffbe2dfa02b30d2dfe35ec2848a275f53be8d930c7aa553

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

Filesize
284KB

MD5
0ead4ea2d44a0207641ed37de4366360

SHA1
e062d6ea408dd3cf504faf896f8d2f0f4fc3c24b

SHA256
88c4f2e16d7cc7ba77008b7239e9ec2439d612ca80107674e7563e4c83a20700

SHA512
09d12657097ac30a47709c16b2825ad864638c6aa9c7960a3705edd7db17e413523692bd67954ce1407b053358acc831e46db0ffb82bc236a4324bd08d733e06

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

Filesize
284KB

MD5
0ead4ea2d44a0207641ed37de4366360

SHA1
e062d6ea408dd3cf504faf896f8d2f0f4fc3c24b

SHA256
88c4f2e16d7cc7ba77008b7239e9ec2439d612ca80107674e7563e4c83a20700

SHA512
09d12657097ac30a47709c16b2825ad864638c6aa9c7960a3705edd7db17e413523692bd67954ce1407b053358acc831e46db0ffb82bc236a4324bd08d733e06

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

Filesize
284KB

MD5
0ead4ea2d44a0207641ed37de4366360

SHA1
e062d6ea408dd3cf504faf896f8d2f0f4fc3c24b

SHA256
88c4f2e16d7cc7ba77008b7239e9ec2439d612ca80107674e7563e4c83a20700

SHA512
09d12657097ac30a47709c16b2825ad864638c6aa9c7960a3705edd7db17e413523692bd67954ce1407b053358acc831e46db0ffb82bc236a4324bd08d733e06

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

Filesize
284KB

MD5
0ead4ea2d44a0207641ed37de4366360

SHA1
e062d6ea408dd3cf504faf896f8d2f0f4fc3c24b

SHA256
88c4f2e16d7cc7ba77008b7239e9ec2439d612ca80107674e7563e4c83a20700

SHA512
09d12657097ac30a47709c16b2825ad864638c6aa9c7960a3705edd7db17e413523692bd67954ce1407b053358acc831e46db0ffb82bc236a4324bd08d733e06

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

Filesize
284KB

MD5
0ead4ea2d44a0207641ed37de4366360

SHA1
e062d6ea408dd3cf504faf896f8d2f0f4fc3c24b

SHA256
88c4f2e16d7cc7ba77008b7239e9ec2439d612ca80107674e7563e4c83a20700

SHA512
09d12657097ac30a47709c16b2825ad864638c6aa9c7960a3705edd7db17e413523692bd67954ce1407b053358acc831e46db0ffb82bc236a4324bd08d733e06

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

Filesize
284KB

MD5
0ead4ea2d44a0207641ed37de4366360

SHA1
e062d6ea408dd3cf504faf896f8d2f0f4fc3c24b

SHA256
88c4f2e16d7cc7ba77008b7239e9ec2439d612ca80107674e7563e4c83a20700

SHA512
09d12657097ac30a47709c16b2825ad864638c6aa9c7960a3705edd7db17e413523692bd67954ce1407b053358acc831e46db0ffb82bc236a4324bd08d733e06

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

Filesize
284KB

MD5
0ead4ea2d44a0207641ed37de4366360

SHA1
e062d6ea408dd3cf504faf896f8d2f0f4fc3c24b

SHA256
88c4f2e16d7cc7ba77008b7239e9ec2439d612ca80107674e7563e4c83a20700

SHA512
09d12657097ac30a47709c16b2825ad864638c6aa9c7960a3705edd7db17e413523692bd67954ce1407b053358acc831e46db0ffb82bc236a4324bd08d733e06

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

Filesize
284KB

MD5
0ead4ea2d44a0207641ed37de4366360

SHA1
e062d6ea408dd3cf504faf896f8d2f0f4fc3c24b

SHA256
88c4f2e16d7cc7ba77008b7239e9ec2439d612ca80107674e7563e4c83a20700

SHA512
09d12657097ac30a47709c16b2825ad864638c6aa9c7960a3705edd7db17e413523692bd67954ce1407b053358acc831e46db0ffb82bc236a4324bd08d733e06

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

Filesize
284KB

MD5
0ead4ea2d44a0207641ed37de4366360

SHA1
e062d6ea408dd3cf504faf896f8d2f0f4fc3c24b

SHA256
88c4f2e16d7cc7ba77008b7239e9ec2439d612ca80107674e7563e4c83a20700

SHA512
09d12657097ac30a47709c16b2825ad864638c6aa9c7960a3705edd7db17e413523692bd67954ce1407b053358acc831e46db0ffb82bc236a4324bd08d733e06

Download Submit
memory/1280-106-0x0000000000080000-0x0000000000085000-memory.dmp

Filesize
20KB

Download
memory/1280-109-0x0000000000020000-0x0000000000025000-memory.dmp

Filesize
20KB

Download
memory/1280-107-0x0000000000020000-0x0000000000025000-memory.dmp

Filesize
20KB

Download
memory/1396-102-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1396-108-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1640-103-0x0000000000400000-0x0000000000405000-memory.dmp

Filesize
20KB

Download
memory/1640-90-0x0000000000400000-0x0000000000405000-memory.dmp

Filesize
20KB

Download
memory/1640-95-0x0000000000400000-0x0000000000405000-memory.dmp

Filesize
20KB

Download
memory/1640-92-0x0000000000400000-0x0000000000405000-memory.dmp

Filesize
20KB

Download
memory/1760-63-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1760-57-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1760-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1760-101-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1760-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1760-81-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1760-64-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1760-67-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1760-68-0x00000000757A1000-0x00000000757A3000-memory.dmp

Filesize
8KB

Download
memory/1760-56-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download