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

4956 Skype.exe
4892 Skype.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

764 netsh.exe

pid	process
4956	Skype.exe
4892	Skype.exe

pid	process
764	netsh.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

Processes:

77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.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

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-1-5-21-2629973501-4017243118-3254762364-1000\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 5116 set thread context of 2528	5116	77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe	77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe
PID 4956 set thread context of 4892	4956	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 27 IoCs

Processes:

Skype.exe

pid	process
4892	Skype.exe
4892	Skype.exe
4892	Skype.exe
4892	Skype.exe
4892	Skype.exe
4892	Skype.exe
4892	Skype.exe
4892	Skype.exe
4892	Skype.exe
4892	Skype.exe
4892	Skype.exe
4892	Skype.exe
4892	Skype.exe
4892	Skype.exe
4892	Skype.exe
4892	Skype.exe
4892	Skype.exe
4892	Skype.exe
4892	Skype.exe
4892	Skype.exe
4892	Skype.exe
4892	Skype.exe
4892	Skype.exe
4892	Skype.exe
4892	Skype.exe
4892	Skype.exe
4892	Skype.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Skype.exe

description pid process

Token: SeDebugPrivilege 4892 Skype.exe

description	pid	process
Token: SeDebugPrivilege	4892	Skype.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exeSkype.exeSkype.exe

description	pid	process	target process
PID 5116 wrote to memory of 2528	5116	77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe	77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe
PID 5116 wrote to memory of 2528	5116	77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe	77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe
PID 5116 wrote to memory of 2528	5116	77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe	77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe
PID 5116 wrote to memory of 2528	5116	77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe	77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe
PID 5116 wrote to memory of 2528	5116	77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe	77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe
PID 2528 wrote to memory of 4956	2528	77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe	Skype.exe
PID 2528 wrote to memory of 4956	2528	77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe	Skype.exe
PID 2528 wrote to memory of 4956	2528	77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe	Skype.exe
PID 4956 wrote to memory of 4892	4956	Skype.exe	Skype.exe
PID 4956 wrote to memory of 4892	4956	Skype.exe	Skype.exe
PID 4956 wrote to memory of 4892	4956	Skype.exe	Skype.exe
PID 4956 wrote to memory of 4892	4956	Skype.exe	Skype.exe
PID 4956 wrote to memory of 4892	4956	Skype.exe	Skype.exe
PID 4892 wrote to memory of 764	4892	Skype.exe	netsh.exe
PID 4892 wrote to memory of 764	4892	Skype.exe	netsh.exe
PID 4892 wrote to memory of 764	4892	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:5116

C:\Users\Admin\AppData\Local\Temp\77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe
C:\Users\Admin\AppData\Local\Temp\77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe
2⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2528

C:\Users\Admin\AppData\Local\Temp\Skype.exe
"C:\Users\Admin\AppData\Local\Temp\Skype.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4956

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:4892

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:764

Network

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

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea.exe.log
Filesize
319B

MD5
600936e187ce94453648a9245b2b42a5

SHA1
3349e5da3f713259244a2cbcb4a9dca777f637ed

SHA256
1493eb1dc75a64eb2eb06bc9eb2c864b78fc4a2c674108d5183ac7824013ff2d

SHA512
d41203f93ed77430dc570e82dc713f09d21942d75d1f9c3c84135421550ac2fa3845b7e46df70d2c57fe97d3a88e43c672771bb8b6433c44584c4e64646c1964

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

MD5
77e7b6334534a6dd535d67b6a6040bcb

SHA1
28449665c68297eddcc526e3fd87f683833ff120

SHA256
77d9b9488397ddc323b0e2152ca8f4835a912388ce6c9159b5d2191e5514b2ea

SHA512
6040c8b2d2eebc128997c320f7f799ed01c870004c75bf956f196ae14893f1cf9acb56598344b9e8344df72c996a862335692b198ebe0057b1e18d8652a592c5

Download Submit
memory/764-148-0x0000000000000000-mapping.dmp

Download
memory/2528-142-0x0000000075360000-0x0000000075911000-memory.dmp

Filesize
5.7MB

Download
memory/2528-135-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2528-134-0x0000000000000000-mapping.dmp

Download
memory/2528-137-0x0000000075360000-0x0000000075911000-memory.dmp

Filesize
5.7MB

Download
memory/4892-143-0x0000000000000000-mapping.dmp

Download
memory/4892-149-0x0000000075360000-0x0000000075911000-memory.dmp

Filesize
5.7MB

Download
memory/4892-150-0x0000000075360000-0x0000000075911000-memory.dmp

Filesize
5.7MB

Download
memory/4956-138-0x0000000000000000-mapping.dmp

Download
memory/4956-146-0x0000000075360000-0x0000000075911000-memory.dmp

Filesize
5.7MB

Download
memory/4956-147-0x0000000075360000-0x0000000075911000-memory.dmp

Filesize
5.7MB

Download
memory/5116-133-0x0000000075360000-0x0000000075911000-memory.dmp

Filesize
5.7MB

Download
memory/5116-136-0x0000000075360000-0x0000000075911000-memory.dmp

Filesize
5.7MB

Download
memory/5116-132-0x0000000075360000-0x0000000075911000-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