77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea

General

Target

77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe
Size

198KB
MD5

77e7b6334534a6dd535d67b6a6040bcb
SHA1

28449665c68297eddcc526e3fd87f683833ff120
SHA256

77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea
SHA512

6040c8b2d2eebc128997c320f7f799ed01c870004c75bf956f196ae14893f1cf9acb56598344b9e8344df72c996a862335692b198ebe0057b1e18d8652a592c5
SSDEEP

3072:mAqnm0E32GhNvv3jPXQyZbAZmIqXKWL/kpTozKbhLw5gX70TJQ1uy4vQID:ynmn2GhNX3jfA0IqXKWIToqr7t7Kf

Score

8^/10

evasion persistence

Malware Config

Signatures

Executes dropped EXE 2 IoCs

Processes:

Skype.exeSkype.exe

pid process

1976 Skype.exe
1664 Skype.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

1096 netsh.exe

pid	process
1976	Skype.exe
1664	Skype.exe

pid	process
1096	netsh.exe

Drops startup file 2 IoCs

Processes:

Skype.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\8e3bc91142bd8d798a10a1667ae4d2be.exe	Skype.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\8e3bc91142bd8d798a10a1667ae4d2be.exe	Skype.exe

Loads dropped DLL 2 IoCs

Processes:

77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exeSkype.exe

pid process

1344 77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe
1976 Skype.exe

pid	process
1344	77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe
1976	Skype.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

Skype.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\8e3bc91142bd8d798a10a1667ae4d2be = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Skype.exe\" .."	Skype.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\8e3bc91142bd8d798a10a1667ae4d2be = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Skype.exe\" .."	Skype.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exeSkype.exe

description	pid	process	target process
PID 2036 set thread context of 1344	2036	77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe	77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe
PID 1976 set thread context of 1664	1976	Skype.exe	Skype.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

Processes:

Skype.exe

pid process

1664 Skype.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Skype.exe

description pid process

Token: SeDebugPrivilege 1664 Skype.exe

pid	process
1664	Skype.exe

description	pid	process
Token: SeDebugPrivilege	1664	Skype.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exeSkype.exeSkype.exe

description	pid	process	target process
PID 2036 wrote to memory of 1344	2036	77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe	77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe
PID 2036 wrote to memory of 1344	2036	77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe	77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe
PID 2036 wrote to memory of 1344	2036	77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe	77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe
PID 2036 wrote to memory of 1344	2036	77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe	77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe
PID 2036 wrote to memory of 1344	2036	77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe	77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe
PID 2036 wrote to memory of 1344	2036	77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe	77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe
PID 1344 wrote to memory of 1976	1344	77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe	Skype.exe
PID 1344 wrote to memory of 1976	1344	77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe	Skype.exe
PID 1344 wrote to memory of 1976	1344	77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe	Skype.exe
PID 1344 wrote to memory of 1976	1344	77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe	Skype.exe
PID 1976 wrote to memory of 1664	1976	Skype.exe	Skype.exe
PID 1976 wrote to memory of 1664	1976	Skype.exe	Skype.exe
PID 1976 wrote to memory of 1664	1976	Skype.exe	Skype.exe
PID 1976 wrote to memory of 1664	1976	Skype.exe	Skype.exe
PID 1976 wrote to memory of 1664	1976	Skype.exe	Skype.exe
PID 1976 wrote to memory of 1664	1976	Skype.exe	Skype.exe
PID 1664 wrote to memory of 1096	1664	Skype.exe	netsh.exe
PID 1664 wrote to memory of 1096	1664	Skype.exe	netsh.exe
PID 1664 wrote to memory of 1096	1664	Skype.exe	netsh.exe
PID 1664 wrote to memory of 1096	1664	Skype.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe
"C:\Users\Admin\AppData\Local\Temp\77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2036

C:\Users\Admin\AppData\Local\Temp\77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe
C:\Users\Admin\AppData\Local\Temp\77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1344

C:\Users\Admin\AppData\Local\Temp\Skype.exe
"C:\Users\Admin\AppData\Local\Temp\Skype.exe"
3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1976

C:\Users\Admin\AppData\Local\Temp\Skype.exe
C:\Users\Admin\AppData\Local\Temp\Skype.exe
4⤵
- Executes dropped EXE
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1664

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Skype.exe" "Skype.exe" ENABLE
5⤵
- Modifies Windows Firewall
PID:1096

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\Skype.exe
Filesize
198KB

MD5
77e7b6334534a6dd535d67b6a6040bcb

SHA1
28449665c68297eddcc526e3fd87f683833ff120

SHA256
77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea

SHA512
6040c8b2d2eebc128997c320f7f799ed01c870004c75bf956f196ae14893f1cf9acb56598344b9e8344df72c996a862335692b198ebe0057b1e18d8652a592c5

Download Submit
C:\Users\Admin\AppData\Local\Temp\Skype.exe
Filesize
198KB

MD5
77e7b6334534a6dd535d67b6a6040bcb

SHA1
28449665c68297eddcc526e3fd87f683833ff120

SHA256
77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea

SHA512
6040c8b2d2eebc128997c320f7f799ed01c870004c75bf956f196ae14893f1cf9acb56598344b9e8344df72c996a862335692b198ebe0057b1e18d8652a592c5

Download Submit
C:\Users\Admin\AppData\Local\Temp\Skype.exe
Filesize
198KB

MD5
77e7b6334534a6dd535d67b6a6040bcb

SHA1
28449665c68297eddcc526e3fd87f683833ff120

SHA256
77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea

SHA512
6040c8b2d2eebc128997c320f7f799ed01c870004c75bf956f196ae14893f1cf9acb56598344b9e8344df72c996a862335692b198ebe0057b1e18d8652a592c5

Download Submit
\Users\Admin\AppData\Local\Temp\Skype.exe
Filesize
198KB

MD5
77e7b6334534a6dd535d67b6a6040bcb

SHA1
28449665c68297eddcc526e3fd87f683833ff120

SHA256
77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea

SHA512
6040c8b2d2eebc128997c320f7f799ed01c870004c75bf956f196ae14893f1cf9acb56598344b9e8344df72c996a862335692b198ebe0057b1e18d8652a592c5

Download Submit
\Users\Admin\AppData\Local\Temp\Skype.exe
Filesize
198KB

MD5
77e7b6334534a6dd535d67b6a6040bcb

SHA1
28449665c68297eddcc526e3fd87f683833ff120

SHA256
77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea

SHA512
6040c8b2d2eebc128997c320f7f799ed01c870004c75bf956f196ae14893f1cf9acb56598344b9e8344df72c996a862335692b198ebe0057b1e18d8652a592c5

Download Submit
memory/1096-83-0x0000000000000000-mapping.dmp

Download
memory/1344-60-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1344-65-0x00000000745F0000-0x0000000074B9B000-memory.dmp

Filesize
5.7MB

Download
memory/1344-62-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1344-58-0x000000000040C51E-mapping.dmp

Download
memory/1344-71-0x00000000745F0000-0x0000000074B9B000-memory.dmp

Filesize
5.7MB

Download
memory/1344-57-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1664-85-0x00000000745F0000-0x0000000074B9B000-memory.dmp

Filesize
5.7MB

Download
memory/1664-74-0x000000000040C51E-mapping.dmp

Download
memory/1664-82-0x00000000745F0000-0x0000000074B9B000-memory.dmp

Filesize
5.7MB

Download
memory/1976-79-0x00000000745F0000-0x0000000074B9B000-memory.dmp

Filesize
5.7MB

Download
memory/1976-67-0x0000000000000000-mapping.dmp

Download
memory/2036-54-0x0000000076151000-0x0000000076153000-memory.dmp

Filesize
8KB

Download
memory/2036-56-0x00000000745F0000-0x0000000074B9B000-memory.dmp

Filesize
5.7MB

Download
memory/2036-55-0x00000000745F0000-0x0000000074B9B000-memory.dmp

Filesize
5.7MB

Download
memory/2036-64-0x00000000745F0000-0x0000000074B9B000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads