e985d10405de5c72d770cbf50e0a8f718620b151a81a9adc4d04d8e8e50c87f7

General

Target

e985d10405de5c72d770cbf50e0a8f718620b151a81a9adc4d04d8e8e50c87f7.exe
Size

123KB
MD5

b56c60ed9f715da6b9070fc2d7bcc140
SHA1

2050e4857a2a2c0c60db7c968edc074719a75022
SHA256

e985d10405de5c72d770cbf50e0a8f718620b151a81a9adc4d04d8e8e50c87f7
SHA512

5c58aa8419651bc52856d7962774d8e78d45661c08f4f3509738a8d1f88fad980f0ce065315a4b948d8f7fe38065ccb96aa2c40af04212dc829dde6c1639fd56
SSDEEP

1536:TkEMcGTsegxg/EL0OJ60IIpl6JHrcMZaVHNYLh3K1CqkLu1K5:uAjrrIITUHrcMZaVHy41Cqf

Score

8^/10

evasion persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

nenka.exe

pid process

2036 nenka.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

560 netsh.exe
Loads dropped DLL 1 IoCs

Processes:

e985d10405de5c72d770cbf50e0a8f718620b151a81a9adc4d04d8e8e50c87f7.exe

pid process

1724 e985d10405de5c72d770cbf50e0a8f718620b151a81a9adc4d04d8e8e50c87f7.exe

pid	process
2036	nenka.exe

pid	process
560	netsh.exe

pid	process
1724	e985d10405de5c72d770cbf50e0a8f718620b151a81a9adc4d04d8e8e50c87f7.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

nenka.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\a8123894d0423a3b3b7e96db41f81d1b = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\nenka.exe\" .."	nenka.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\a8123894d0423a3b3b7e96db41f81d1b = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\nenka.exe\" .."	nenka.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 19 IoCs

Processes:

nenka.exe

description	pid	process
Token: SeDebugPrivilege	2036	nenka.exe
Token: 33	2036	nenka.exe
Token: SeIncBasePriorityPrivilege	2036	nenka.exe
Token: 33	2036	nenka.exe
Token: SeIncBasePriorityPrivilege	2036	nenka.exe
Token: 33	2036	nenka.exe
Token: SeIncBasePriorityPrivilege	2036	nenka.exe
Token: 33	2036	nenka.exe
Token: SeIncBasePriorityPrivilege	2036	nenka.exe
Token: 33	2036	nenka.exe
Token: SeIncBasePriorityPrivilege	2036	nenka.exe
Token: 33	2036	nenka.exe
Token: SeIncBasePriorityPrivilege	2036	nenka.exe
Token: 33	2036	nenka.exe
Token: SeIncBasePriorityPrivilege	2036	nenka.exe
Token: 33	2036	nenka.exe
Token: SeIncBasePriorityPrivilege	2036	nenka.exe
Token: 33	2036	nenka.exe
Token: SeIncBasePriorityPrivilege	2036	nenka.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

e985d10405de5c72d770cbf50e0a8f718620b151a81a9adc4d04d8e8e50c87f7.exenenka.exe

description	pid	process	target process
PID 1724 wrote to memory of 2036	1724	e985d10405de5c72d770cbf50e0a8f718620b151a81a9adc4d04d8e8e50c87f7.exe	nenka.exe
PID 1724 wrote to memory of 2036	1724	e985d10405de5c72d770cbf50e0a8f718620b151a81a9adc4d04d8e8e50c87f7.exe	nenka.exe
PID 1724 wrote to memory of 2036	1724	e985d10405de5c72d770cbf50e0a8f718620b151a81a9adc4d04d8e8e50c87f7.exe	nenka.exe
PID 1724 wrote to memory of 2036	1724	e985d10405de5c72d770cbf50e0a8f718620b151a81a9adc4d04d8e8e50c87f7.exe	nenka.exe
PID 2036 wrote to memory of 560	2036	nenka.exe	netsh.exe
PID 2036 wrote to memory of 560	2036	nenka.exe	netsh.exe
PID 2036 wrote to memory of 560	2036	nenka.exe	netsh.exe
PID 2036 wrote to memory of 560	2036	nenka.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\e985d10405de5c72d770cbf50e0a8f718620b151a81a9adc4d04d8e8e50c87f7.exe
"C:\Users\Admin\AppData\Local\Temp\e985d10405de5c72d770cbf50e0a8f718620b151a81a9adc4d04d8e8e50c87f7.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1724

C:\Users\Admin\AppData\Local\Temp\nenka.exe
"C:\Users\Admin\AppData\Local\Temp\nenka.exe"
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2036

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\nenka.exe" "nenka.exe" ENABLE
3⤵
- Modifies Windows Firewall
PID:560

Network

MITRE ATT&CK Enterprise 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

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\nenka.exe

Filesize
123KB

MD5
b56c60ed9f715da6b9070fc2d7bcc140

SHA1
2050e4857a2a2c0c60db7c968edc074719a75022

SHA256
e985d10405de5c72d770cbf50e0a8f718620b151a81a9adc4d04d8e8e50c87f7

SHA512
5c58aa8419651bc52856d7962774d8e78d45661c08f4f3509738a8d1f88fad980f0ce065315a4b948d8f7fe38065ccb96aa2c40af04212dc829dde6c1639fd56

Download Submit
C:\Users\Admin\AppData\Local\Temp\nenka.exe

Filesize
123KB

MD5
b56c60ed9f715da6b9070fc2d7bcc140

SHA1
2050e4857a2a2c0c60db7c968edc074719a75022

SHA256
e985d10405de5c72d770cbf50e0a8f718620b151a81a9adc4d04d8e8e50c87f7

SHA512
5c58aa8419651bc52856d7962774d8e78d45661c08f4f3509738a8d1f88fad980f0ce065315a4b948d8f7fe38065ccb96aa2c40af04212dc829dde6c1639fd56

Download Submit
\Users\Admin\AppData\Local\Temp\nenka.exe

Filesize
123KB

MD5
b56c60ed9f715da6b9070fc2d7bcc140

SHA1
2050e4857a2a2c0c60db7c968edc074719a75022

SHA256
e985d10405de5c72d770cbf50e0a8f718620b151a81a9adc4d04d8e8e50c87f7

SHA512
5c58aa8419651bc52856d7962774d8e78d45661c08f4f3509738a8d1f88fad980f0ce065315a4b948d8f7fe38065ccb96aa2c40af04212dc829dde6c1639fd56

Download Submit
memory/560-63-0x0000000000000000-mapping.dmp

Download
memory/1724-54-0x0000000074DC1000-0x0000000074DC3000-memory.dmp

Filesize
8KB

Download
memory/1724-55-0x00000000742C0000-0x000000007486B000-memory.dmp

Filesize
5.7MB

Download
memory/1724-61-0x00000000742C0000-0x000000007486B000-memory.dmp

Filesize
5.7MB

Download
memory/2036-57-0x0000000000000000-mapping.dmp

Download
memory/2036-62-0x00000000742C0000-0x000000007486B000-memory.dmp

Filesize
5.7MB

Download
memory/2036-65-0x00000000742C0000-0x000000007486B000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads