tofsee | 2c581e64c468ce51955e2b264a804c0adf973ad3c2c56daeafdf83e4187f393c

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
06-05-2024 01:48

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General

Target

71d1f22830e0f40506171cda626891b4f954ec22f4a4cd0045b37f8d6c404451.exe
Size

2.0MB
MD5

b5829ea81cde8f48ba1190e20e6bb15d
SHA1

51fbb15275360bbf2a866f339045527e941e1a85
SHA256

71d1f22830e0f40506171cda626891b4f954ec22f4a4cd0045b37f8d6c404451
SHA512

d84e43e6cf342d0e7696be6b1cbcf42dce5d1efe518f4949faa8841ee398a25a63a6e41440eb10ba0d276454ba73752c9ffb17eddbfd0813a636646663e26b4a
SSDEEP

49152:aaXI0V7PoU9lHrHmvtiLGMIqCGLhRSCquJnm:3Y0V7gU9l2tiLGVGLhRvquJnm

Score

10^/10

tofsee zgrat evasion execution persistence rat spyware trojan

Malware Config

Extracted

Family

tofsee

vanaheim.cn

jotunheim.name

Signatures

Detect ZGRat V1 5 IoCs

resource	yara_rule
behavioral1/memory/352-39-0x0000000000090000-0x0000000000114000-memory.dmp	family_zgrat_v1
behavioral1/memory/352-38-0x0000000000090000-0x0000000000114000-memory.dmp	family_zgrat_v1
behavioral1/memory/1528-65-0x0000000000400000-0x0000000000484000-memory.dmp	family_zgrat_v1
behavioral1/memory/1528-66-0x0000000000400000-0x0000000000484000-memory.dmp	family_zgrat_v1
behavioral1/memory/1528-67-0x0000000000400000-0x0000000000484000-memory.dmp	family_zgrat_v1

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
ZGRat
ZGRat is remote access trojan written in C#.
rat zgrat
Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
540	netsh.exe

Executes dropped EXE 1 IoCs

pid	Process
1932	eilhtczv.exe

Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2912 set thread context of 2528	2912	71d1f22830e0f40506171cda626891b4f954ec22f4a4cd0045b37f8d6c404451.exe	28
PID 2912 set thread context of 2520	2912	71d1f22830e0f40506171cda626891b4f954ec22f4a4cd0045b37f8d6c404451.exe	29
PID 2528 set thread context of 1528	2528	AddInProcess32.exe	33

Launches sc.exe 3 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
2992	sc.exe
2224	sc.exe
1924	sc.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2912	71d1f22830e0f40506171cda626891b4f954ec22f4a4cd0045b37f8d6c404451.exe
2912	71d1f22830e0f40506171cda626891b4f954ec22f4a4cd0045b37f8d6c404451.exe
2528	AddInProcess32.exe
2528	AddInProcess32.exe
2528	AddInProcess32.exe
2528	AddInProcess32.exe
1528	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2912	71d1f22830e0f40506171cda626891b4f954ec22f4a4cd0045b37f8d6c404451.exe
Token: SeDebugPrivilege	2528	AddInProcess32.exe
Token: SeDebugPrivilege	1528	InstallUtil.exe
Token: SeBackupPrivilege	1528	InstallUtil.exe
Token: SeSecurityPrivilege	1528	InstallUtil.exe
Token: SeSecurityPrivilege	1528	InstallUtil.exe
Token: SeSecurityPrivilege	1528	InstallUtil.exe
Token: SeSecurityPrivilege	1528	InstallUtil.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2912 wrote to memory of 2528	2912	71d1f22830e0f40506171cda626891b4f954ec22f4a4cd0045b37f8d6c404451.exe	28
PID 2912 wrote to memory of 2528	2912	71d1f22830e0f40506171cda626891b4f954ec22f4a4cd0045b37f8d6c404451.exe	28
PID 2912 wrote to memory of 2528	2912	71d1f22830e0f40506171cda626891b4f954ec22f4a4cd0045b37f8d6c404451.exe	28
PID 2912 wrote to memory of 2528	2912	71d1f22830e0f40506171cda626891b4f954ec22f4a4cd0045b37f8d6c404451.exe	28
PID 2912 wrote to memory of 2528	2912	71d1f22830e0f40506171cda626891b4f954ec22f4a4cd0045b37f8d6c404451.exe	28
PID 2912 wrote to memory of 2528	2912	71d1f22830e0f40506171cda626891b4f954ec22f4a4cd0045b37f8d6c404451.exe	28
PID 2912 wrote to memory of 2528	2912	71d1f22830e0f40506171cda626891b4f954ec22f4a4cd0045b37f8d6c404451.exe	28
PID 2912 wrote to memory of 2528	2912	71d1f22830e0f40506171cda626891b4f954ec22f4a4cd0045b37f8d6c404451.exe	28
PID 2912 wrote to memory of 2528	2912	71d1f22830e0f40506171cda626891b4f954ec22f4a4cd0045b37f8d6c404451.exe	28
PID 2912 wrote to memory of 2520	2912	71d1f22830e0f40506171cda626891b4f954ec22f4a4cd0045b37f8d6c404451.exe	29
PID 2912 wrote to memory of 2520	2912	71d1f22830e0f40506171cda626891b4f954ec22f4a4cd0045b37f8d6c404451.exe	29
PID 2912 wrote to memory of 2520	2912	71d1f22830e0f40506171cda626891b4f954ec22f4a4cd0045b37f8d6c404451.exe	29
PID 2912 wrote to memory of 2520	2912	71d1f22830e0f40506171cda626891b4f954ec22f4a4cd0045b37f8d6c404451.exe	29
PID 2912 wrote to memory of 2520	2912	71d1f22830e0f40506171cda626891b4f954ec22f4a4cd0045b37f8d6c404451.exe	29
PID 2912 wrote to memory of 2520	2912	71d1f22830e0f40506171cda626891b4f954ec22f4a4cd0045b37f8d6c404451.exe	29
PID 2912 wrote to memory of 2520	2912	71d1f22830e0f40506171cda626891b4f954ec22f4a4cd0045b37f8d6c404451.exe	29
PID 2912 wrote to memory of 2520	2912	71d1f22830e0f40506171cda626891b4f954ec22f4a4cd0045b37f8d6c404451.exe	29
PID 2912 wrote to memory of 2520	2912	71d1f22830e0f40506171cda626891b4f954ec22f4a4cd0045b37f8d6c404451.exe	29
PID 2912 wrote to memory of 2520	2912	71d1f22830e0f40506171cda626891b4f954ec22f4a4cd0045b37f8d6c404451.exe	29
PID 2528 wrote to memory of 352	2528	AddInProcess32.exe	32
PID 2528 wrote to memory of 352	2528	AddInProcess32.exe	32
PID 2528 wrote to memory of 352	2528	AddInProcess32.exe	32
PID 2528 wrote to memory of 352	2528	AddInProcess32.exe	32
PID 2528 wrote to memory of 352	2528	AddInProcess32.exe	32
PID 2528 wrote to memory of 352	2528	AddInProcess32.exe	32
PID 2528 wrote to memory of 352	2528	AddInProcess32.exe	32
PID 2528 wrote to memory of 352	2528	AddInProcess32.exe	32
PID 2528 wrote to memory of 352	2528	AddInProcess32.exe	32
PID 2528 wrote to memory of 352	2528	AddInProcess32.exe	32
PID 2528 wrote to memory of 352	2528	AddInProcess32.exe	32
PID 2528 wrote to memory of 352	2528	AddInProcess32.exe	32
PID 2528 wrote to memory of 1528	2528	AddInProcess32.exe	33
PID 2528 wrote to memory of 1528	2528	AddInProcess32.exe	33
PID 2528 wrote to memory of 1528	2528	AddInProcess32.exe	33
PID 2528 wrote to memory of 1528	2528	AddInProcess32.exe	33
PID 2528 wrote to memory of 1528	2528	AddInProcess32.exe	33
PID 2528 wrote to memory of 1528	2528	AddInProcess32.exe	33
PID 2528 wrote to memory of 1528	2528	AddInProcess32.exe	33
PID 2528 wrote to memory of 1528	2528	AddInProcess32.exe	33
PID 2528 wrote to memory of 1528	2528	AddInProcess32.exe	33
PID 2528 wrote to memory of 1528	2528	AddInProcess32.exe	33
PID 2528 wrote to memory of 1528	2528	AddInProcess32.exe	33
PID 2528 wrote to memory of 1528	2528	AddInProcess32.exe	33
PID 2520 wrote to memory of 2880	2520	AddInProcess32.exe	34
PID 2520 wrote to memory of 2880	2520	AddInProcess32.exe	34
PID 2520 wrote to memory of 2880	2520	AddInProcess32.exe	34
PID 2520 wrote to memory of 2880	2520	AddInProcess32.exe	34
PID 2520 wrote to memory of 2244	2520	AddInProcess32.exe	36
PID 2520 wrote to memory of 2244	2520	AddInProcess32.exe	36
PID 2520 wrote to memory of 2244	2520	AddInProcess32.exe	36
PID 2520 wrote to memory of 2244	2520	AddInProcess32.exe	36
PID 2520 wrote to memory of 2992	2520	AddInProcess32.exe	38
PID 2520 wrote to memory of 2992	2520	AddInProcess32.exe	38
PID 2520 wrote to memory of 2992	2520	AddInProcess32.exe	38
PID 2520 wrote to memory of 2992	2520	AddInProcess32.exe	38
PID 2520 wrote to memory of 2224	2520	AddInProcess32.exe	40
PID 2520 wrote to memory of 2224	2520	AddInProcess32.exe	40
PID 2520 wrote to memory of 2224	2520	AddInProcess32.exe	40
PID 2520 wrote to memory of 2224	2520	AddInProcess32.exe	40
PID 2520 wrote to memory of 1924	2520	AddInProcess32.exe	42
PID 2520 wrote to memory of 1924	2520	AddInProcess32.exe	42
PID 2520 wrote to memory of 1924	2520	AddInProcess32.exe	42
PID 2520 wrote to memory of 1924	2520	AddInProcess32.exe	42
PID 2520 wrote to memory of 540	2520	AddInProcess32.exe	45

C:\Users\Admin\AppData\Local\Temp\71d1f22830e0f40506171cda626891b4f954ec22f4a4cd0045b37f8d6c404451.exe
"C:\Users\Admin\AppData\Local\Temp\71d1f22830e0f40506171cda626891b4f954ec22f4a4cd0045b37f8d6c404451.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2912
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2528
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
    3⤵
    PID:352
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1528
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2520
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vekmbobi\
    3⤵
    PID:2880
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\eilhtczv.exe" C:\Windows\SysWOW64\vekmbobi\
    3⤵
    PID:2244
- - C:\Windows\SysWOW64\sc.exe
    "C:\Windows\System32\sc.exe" create vekmbobi binPath= "C:\Windows\SysWOW64\vekmbobi\eilhtczv.exe /d\"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe\"" type= own start= auto DisplayName= "wifi support"
    3⤵
    - Launches sc.exe
    PID:2992
- - C:\Windows\SysWOW64\sc.exe
    "C:\Windows\System32\sc.exe" description vekmbobi "wifi internet conection"
    3⤵
    - Launches sc.exe
    PID:2224
- - C:\Windows\SysWOW64\sc.exe
    "C:\Windows\System32\sc.exe" start vekmbobi
    3⤵
    - Launches sc.exe
    PID:1924
- - C:\Windows\SysWOW64\netsh.exe
    "C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
    3⤵
    - Modifies Windows Firewall
    PID:540

C:\Windows\SysWOW64\vekmbobi\eilhtczv.exe
C:\Windows\SysWOW64\vekmbobi\eilhtczv.exe /d"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
1⤵
- Executes dropped EXE
PID:1932

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
12.0MB

MD5
7501e31d627555e10566a2eeb6443d29

SHA1
d14c612155889beaa5282a75dfb6756379c0f2b2

SHA256
391d8b1055c4df95680d931bffb928b2747a26477ef33b6c9b6e83f118037786

SHA512
9c505571214036fefc6dc6dbeb7833c9675cdb291e0442581a2580e7963f54cf98851574094627b4e4afe1a3be7e9d6a08e1bacc28d87bfa2d4874ea6ae9cc68

Download Submit
memory/352-41-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/352-36-0x0000000000090000-0x0000000000114000-memory.dmp

Filesize
528KB

Download
memory/352-37-0x0000000000090000-0x0000000000114000-memory.dmp

Filesize
528KB

Download
memory/352-38-0x0000000000090000-0x0000000000114000-memory.dmp

Filesize
528KB

Download
memory/352-39-0x0000000000090000-0x0000000000114000-memory.dmp

Filesize
528KB

Download
memory/1528-67-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/1528-66-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/1528-65-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/1528-52-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2520-32-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2520-58-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2520-64-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2520-60-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2520-56-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2520-26-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2520-28-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2520-30-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2520-24-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2520-34-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2528-11-0x0000000000400000-0x0000000000538000-memory.dmp

Filesize
1.2MB

Download
memory/2528-17-0x0000000000400000-0x0000000000538000-memory.dmp

Filesize
1.2MB

Download
memory/2528-23-0x0000000074610000-0x0000000074CFE000-memory.dmp

Filesize
6.9MB

Download
memory/2528-19-0x0000000000400000-0x0000000000538000-memory.dmp

Filesize
1.2MB

Download
memory/2528-8-0x0000000000400000-0x0000000000538000-memory.dmp

Filesize
1.2MB

Download
memory/2528-43-0x0000000074610000-0x0000000074CFE000-memory.dmp

Filesize
6.9MB

Download
memory/2528-22-0x0000000074610000-0x0000000074CFE000-memory.dmp

Filesize
6.9MB

Download
memory/2528-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2528-68-0x0000000074610000-0x0000000074CFE000-memory.dmp

Filesize
6.9MB

Download
memory/2528-6-0x0000000000400000-0x0000000000538000-memory.dmp

Filesize
1.2MB

Download
memory/2528-10-0x0000000000400000-0x0000000000538000-memory.dmp

Filesize
1.2MB

Download
memory/2528-54-0x0000000074610000-0x0000000074CFE000-memory.dmp

Filesize
6.9MB

Download
memory/2528-55-0x0000000074610000-0x0000000074CFE000-memory.dmp

Filesize
6.9MB

Download
memory/2528-21-0x0000000000400000-0x0000000000538000-memory.dmp

Filesize
1.2MB

Download
memory/2912-5-0x0000000000B00000-0x0000000000B06000-memory.dmp

Filesize
24KB

Download
memory/2912-15-0x000000007461E000-0x000000007461F000-memory.dmp

Filesize
4KB

Download
memory/2912-59-0x0000000074610000-0x0000000074CFE000-memory.dmp

Filesize
6.9MB

Download
memory/2912-4-0x0000000000B30000-0x0000000000B4A000-memory.dmp

Filesize
104KB

Download
memory/2912-16-0x0000000074610000-0x0000000074CFE000-memory.dmp

Filesize
6.9MB

Download
memory/2912-3-0x0000000000D10000-0x0000000000D54000-memory.dmp

Filesize
272KB

Download
memory/2912-2-0x0000000074610000-0x0000000074CFE000-memory.dmp

Filesize
6.9MB

Download
memory/2912-0-0x000000007461E000-0x000000007461F000-memory.dmp

Filesize
4KB

Download
memory/2912-1-0x0000000000FE0000-0x00000000011E2000-memory.dmp

Filesize
2.0MB

Download