blacknet | 8879cdffed9a72aacab9e1616363fa52f3b2589023fd6eb5df8bf85821947211

Analysis

max time kernel
35s
max time network
114s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
17-04-2024 07:16

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General

Target

f5429e9d0b87173062141225c6ee9137_JaffaCakes118.exe
Size

144KB
MD5

f5429e9d0b87173062141225c6ee9137
SHA1

54ba284aa2260557daa4857717d4cee24d7cdf3b
SHA256

8879cdffed9a72aacab9e1616363fa52f3b2589023fd6eb5df8bf85821947211
SHA512

8a25e2b83dd1343ecf94a32e2300aadae2f59b87b2370aedce4d155075ad5156f6fb10014f55a75a1c2bf55f86fbf66d767e05beafcc494ced7b25b67636542d
SSDEEP

3072:zzruc1Gp7F1FplM2Ooz3aVIFun9wuhbVtLbf8E:v9ilXz3ahn9wStbfb

Score

10^/10

blacknet evasion persistence trojan

Malware Config

Signatures

BlackNET
BlackNET is an open source remote access tool written in VB.NET.
trojan blacknet

Modifies Windows Defender Real-time Protection settings 3 TTPs 4 IoCs

evasion trojan

Modify Registry

T1112

Windows Service

T1543.003

Disable or Modify Tools

T1562.001

Processes:

f5429e9d0b87173062141225c6ee9137_JaffaCakes118.exe

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1"	f5429e9d0b87173062141225c6ee9137_JaffaCakes118.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1"	f5429e9d0b87173062141225c6ee9137_JaffaCakes118.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1"	f5429e9d0b87173062141225c6ee9137_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection	f5429e9d0b87173062141225c6ee9137_JaffaCakes118.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

f5429e9d0b87173062141225c6ee9137_JaffaCakes118.exeWindowsUpdate.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	f5429e9d0b87173062141225c6ee9137_JaffaCakes118.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	WindowsUpdate.exe

Executes dropped EXE 2 IoCs

Processes:

WindowsUpdate.exesvchosts.exe

pid	Process
2848	WindowsUpdate.exe
1884	svchosts.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

f5429e9d0b87173062141225c6ee9137_JaffaCakes118.exeWindowsUpdate.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cde2f914e4cce7f13b2c1cec7b6da970 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\f5429e9d0b87173062141225c6ee9137_JaffaCakes118.exe"	f5429e9d0b87173062141225c6ee9137_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cde2f914e4cce7f13b2c1cec7b6da970 = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\MyClient\\WindowsUpdate.exe"	f5429e9d0b87173062141225c6ee9137_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cde2f914e4cce7f13b2c1cec7b6da970 = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\MyClient\\WindowsUpdate.exe"	WindowsUpdate.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

powershell.exepowershell.exeWindowsUpdate.exe

pid	Process
3720	powershell.exe
3720	powershell.exe
2220	powershell.exe
2220	powershell.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe
2848	WindowsUpdate.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

powershell.exepowershell.exeWindowsUpdate.exesvchosts.exe

description	pid	Process
Token: SeDebugPrivilege	3720	powershell.exe
Token: SeDebugPrivilege	2220	powershell.exe
Token: SeDebugPrivilege	2848	WindowsUpdate.exe
Token: SeDebugPrivilege	1884	svchosts.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

f5429e9d0b87173062141225c6ee9137_JaffaCakes118.exeWindowsUpdate.exe

description	pid	Process	procid_target
PID 4980 wrote to memory of 3720	4980	f5429e9d0b87173062141225c6ee9137_JaffaCakes118.exe	90
PID 4980 wrote to memory of 3720	4980	f5429e9d0b87173062141225c6ee9137_JaffaCakes118.exe	90
PID 4980 wrote to memory of 2848	4980	f5429e9d0b87173062141225c6ee9137_JaffaCakes118.exe	92
PID 4980 wrote to memory of 2848	4980	f5429e9d0b87173062141225c6ee9137_JaffaCakes118.exe	92
PID 2848 wrote to memory of 2220	2848	WindowsUpdate.exe	93
PID 2848 wrote to memory of 2220	2848	WindowsUpdate.exe	93
PID 2848 wrote to memory of 1884	2848	WindowsUpdate.exe	95
PID 2848 wrote to memory of 1884	2848	WindowsUpdate.exe	95

C:\Users\Admin\AppData\Local\Temp\f5429e9d0b87173062141225c6ee9137_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f5429e9d0b87173062141225c6ee9137_JaffaCakes118.exe"
1⤵
- Modifies Windows Defender Real-time Protection settings
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4980
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell" Get-MpPreference -verbose
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3720
- C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2848
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell" Get-MpPreference -verbose
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2220
- - C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\svchosts.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\svchosts.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:1884

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

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\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
d28a889fd956d5cb3accfbaf1143eb6f

SHA1
157ba54b365341f8ff06707d996b3635da8446f7

SHA256
21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45

SHA512
0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_0injbi4w.tgb.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-2177723727-746291240-1644359950-1000\6415fa9cb4f42a79a82136d3f732beb5_83f067b2-4236-4e0d-83e4-ef79b7da67b0

Filesize
2KB

MD5
8de91c4f830956990012f9fd1269e490

SHA1
5396852c5a98d586d3970638bebf52ac4d7da6b9

SHA256
4b1f314ed0d2dd0aedd922297f2b16cce1d5716a24469b72a9e17ea43bc40433

SHA512
4c0ef84683613edb6196a43e2da73c58203e080cdee1c4119ad6b3823db137fec0628eb7fa8f34a7da93aa142a13b001168959d59cb425ae858372b5d7f2d555

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe

Filesize
144KB

MD5
f5429e9d0b87173062141225c6ee9137

SHA1
54ba284aa2260557daa4857717d4cee24d7cdf3b

SHA256
8879cdffed9a72aacab9e1616363fa52f3b2589023fd6eb5df8bf85821947211

SHA512
8a25e2b83dd1343ecf94a32e2300aadae2f59b87b2370aedce4d155075ad5156f6fb10014f55a75a1c2bf55f86fbf66d767e05beafcc494ced7b25b67636542d

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\svchosts.exe

Filesize
18KB

MD5
d133d370c3858c9811e70f95d554d2c6

SHA1
bb09b1253ce571a49b76951283883a3499588295

SHA256
87a1711030512dd414bcbab0659a2b51c0c16505bd8a068a282a1cc2c9fdf93b

SHA512
db4d41fca43e496b2b0d8d47d936a9ce204e3b6c4c669a8a9810362776a977b5337359b843fcd1d20004455d2c91f9790b3accb5352f4e55ec53c7e5d359d778

Download Submit
memory/1884-103-0x00007FF9707D0000-0x00007FF971171000-memory.dmp

Filesize
9.6MB

Download
memory/1884-104-0x00007FF9707D0000-0x00007FF971171000-memory.dmp

Filesize
9.6MB

Download
memory/1884-106-0x0000000000C30000-0x0000000000C40000-memory.dmp

Filesize
64KB

Download
memory/2220-78-0x00007FF96D390000-0x00007FF96DE51000-memory.dmp

Filesize
10.8MB

Download
memory/2220-65-0x0000023567FE0000-0x0000023567FF0000-memory.dmp

Filesize
64KB

Download
memory/2220-64-0x00007FF96D390000-0x00007FF96DE51000-memory.dmp

Filesize
10.8MB

Download
memory/2220-76-0x0000023567FE0000-0x0000023567FF0000-memory.dmp

Filesize
64KB

Download
memory/2848-38-0x00007FF9707D0000-0x00007FF971171000-memory.dmp

Filesize
9.6MB

Download
memory/2848-105-0x00007FF9707D0000-0x00007FF971171000-memory.dmp

Filesize
9.6MB

Download
memory/2848-36-0x0000000001030000-0x0000000001040000-memory.dmp

Filesize
64KB

Download
memory/2848-102-0x00007FF9707D0000-0x00007FF971171000-memory.dmp

Filesize
9.6MB

Download
memory/2848-39-0x00007FF9707D0000-0x00007FF971171000-memory.dmp

Filesize
9.6MB

Download
memory/2848-101-0x0000000001030000-0x0000000001040000-memory.dmp

Filesize
64KB

Download
memory/2848-91-0x0000000001030000-0x0000000001040000-memory.dmp

Filesize
64KB

Download
memory/2848-50-0x0000000001030000-0x0000000001040000-memory.dmp

Filesize
64KB

Download
memory/2848-107-0x0000000001030000-0x0000000001040000-memory.dmp

Filesize
64KB

Download
memory/2848-54-0x0000000001030000-0x0000000001040000-memory.dmp

Filesize
64KB

Download
memory/3720-49-0x000001EF54790000-0x000001EF547B2000-memory.dmp

Filesize
136KB

Download
memory/3720-33-0x000001EF54820000-0x000001EF54830000-memory.dmp

Filesize
64KB

Download
memory/3720-53-0x00007FF96D390000-0x00007FF96DE51000-memory.dmp

Filesize
10.8MB

Download
memory/3720-32-0x00007FF96D390000-0x00007FF96DE51000-memory.dmp

Filesize
10.8MB

Download
memory/3720-34-0x000001EF54820000-0x000001EF54830000-memory.dmp

Filesize
64KB

Download
memory/4980-13-0x000000001CD00000-0x000000001CD62000-memory.dmp

Filesize
392KB

Download
memory/4980-37-0x00007FF9707D0000-0x00007FF971171000-memory.dmp

Filesize
9.6MB

Download
memory/4980-1-0x0000000000D60000-0x0000000000D70000-memory.dmp

Filesize
64KB

Download
memory/4980-8-0x0000000000D60000-0x0000000000D70000-memory.dmp

Filesize
64KB

Download
memory/4980-7-0x000000001C0D0000-0x000000001C11C000-memory.dmp

Filesize
304KB

Download
memory/4980-6-0x0000000000E10000-0x0000000000E18000-memory.dmp

Filesize
32KB

Download
memory/4980-5-0x000000001BF70000-0x000000001C00C000-memory.dmp

Filesize
624KB

Download
memory/4980-3-0x000000001B9B0000-0x000000001BE7E000-memory.dmp

Filesize
4.8MB

Download
memory/4980-4-0x00007FF9707D0000-0x00007FF971171000-memory.dmp

Filesize
9.6MB

Download
memory/4980-2-0x000000001B430000-0x000000001B4D6000-memory.dmp

Filesize
664KB

Download
memory/4980-0-0x00007FF9707D0000-0x00007FF971171000-memory.dmp

Filesize
9.6MB

Download