daa8802270996f3d7b4835fd9fba42da054ad1a58403854c0f86b0666c631ac1

Analysis

max time kernel
150s
max time network
148s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
26/11/2022, 11:26

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General

Target

102.exe
Size

296KB
MD5

53dbea2d9cbdaa8271d05eb5dbb26cd6
SHA1

e991722d8f9d739f8a3adaf70cd8c3c905ce995f
SHA256

810d0d8097c08297f9ddbba9d513ea75ec3cc50ca2f82c7985e148b191ad5a05
SHA512

617c7df31822baf436c88b3d5698b573fcc49f20332b209d134caee682620520fd91b55f671ddfbb857eae212bcf10dfd93438cd648477d43f9cbbe9fcc41fa1
SSDEEP

6144:uVI/y3qx3YgnXIqE8LsUCSLdgR4XbMg65AGdU:hKaxYgYqEssdSGyrMBQ

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
1496	yfat.exe
884	yfat.exe

Loads dropped DLL 2 IoCs

pid	Process
1996	102.exe
1996	102.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\Currentversion\Run	yfat.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\{BC16E362-C29B-EA16-403B-EF65254F307B} = "C:\\Users\\Admin\\AppData\\Roaming\\Idynuq\\yfat.exe"	yfat.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1808 set thread context of 1996	1808	102.exe	28
PID 1496 set thread context of 884	1496	yfat.exe	30
PID 1996 set thread context of 396	1996	102.exe	31

Modifies Internet Explorer settings 1 TTPs 2 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Internet Explorer\Privacy	102.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Internet Explorer\Privacy\CleanCookies = "0"	102.exe

NTFS ADS 1 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Local\Microsoft\Windows Mail\Local Folders\Inbox\0DFE0DDD-00000001.eml:OECustomProperty	WinMail.exe

Suspicious behavior: EnumeratesProcesses 20 IoCs

pid	Process
884	yfat.exe
884	yfat.exe
884	yfat.exe
884	yfat.exe
884	yfat.exe
884	yfat.exe
884	yfat.exe
884	yfat.exe
884	yfat.exe
884	yfat.exe
884	yfat.exe
884	yfat.exe
884	yfat.exe
884	yfat.exe
884	yfat.exe
884	yfat.exe
884	yfat.exe
884	yfat.exe
884	yfat.exe
884	yfat.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeSecurityPrivilege	1996	102.exe
Token: SeSecurityPrivilege	1996	102.exe
Token: SeSecurityPrivilege	396	cmd.exe
Token: SeSecurityPrivilege	396	cmd.exe
Token: SeManageVolumePrivilege	1520	WinMail.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1520	WinMail.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
1520	WinMail.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1808	102.exe
1496	yfat.exe
1520	WinMail.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1808 wrote to memory of 1996	1808	102.exe	28
PID 1808 wrote to memory of 1996	1808	102.exe	28
PID 1808 wrote to memory of 1996	1808	102.exe	28
PID 1808 wrote to memory of 1996	1808	102.exe	28
PID 1808 wrote to memory of 1996	1808	102.exe	28
PID 1808 wrote to memory of 1996	1808	102.exe	28
PID 1808 wrote to memory of 1996	1808	102.exe	28
PID 1808 wrote to memory of 1996	1808	102.exe	28
PID 1808 wrote to memory of 1996	1808	102.exe	28
PID 1996 wrote to memory of 1496	1996	102.exe	29
PID 1996 wrote to memory of 1496	1996	102.exe	29
PID 1996 wrote to memory of 1496	1996	102.exe	29
PID 1996 wrote to memory of 1496	1996	102.exe	29
PID 1496 wrote to memory of 884	1496	yfat.exe	30
PID 1496 wrote to memory of 884	1496	yfat.exe	30
PID 1496 wrote to memory of 884	1496	yfat.exe	30
PID 1496 wrote to memory of 884	1496	yfat.exe	30
PID 1496 wrote to memory of 884	1496	yfat.exe	30
PID 1496 wrote to memory of 884	1496	yfat.exe	30
PID 1496 wrote to memory of 884	1496	yfat.exe	30
PID 1496 wrote to memory of 884	1496	yfat.exe	30
PID 1496 wrote to memory of 884	1496	yfat.exe	30
PID 884 wrote to memory of 1124	884	yfat.exe	18
PID 884 wrote to memory of 1124	884	yfat.exe	18
PID 884 wrote to memory of 1124	884	yfat.exe	18
PID 884 wrote to memory of 1124	884	yfat.exe	18
PID 884 wrote to memory of 1124	884	yfat.exe	18
PID 884 wrote to memory of 1236	884	yfat.exe	19
PID 884 wrote to memory of 1236	884	yfat.exe	19
PID 884 wrote to memory of 1236	884	yfat.exe	19
PID 884 wrote to memory of 1236	884	yfat.exe	19
PID 884 wrote to memory of 1236	884	yfat.exe	19
PID 884 wrote to memory of 1304	884	yfat.exe	20
PID 884 wrote to memory of 1304	884	yfat.exe	20
PID 884 wrote to memory of 1304	884	yfat.exe	20
PID 884 wrote to memory of 1304	884	yfat.exe	20
PID 884 wrote to memory of 1304	884	yfat.exe	20
PID 884 wrote to memory of 1996	884	yfat.exe	28
PID 884 wrote to memory of 1996	884	yfat.exe	28
PID 884 wrote to memory of 1996	884	yfat.exe	28
PID 884 wrote to memory of 1996	884	yfat.exe	28
PID 884 wrote to memory of 1996	884	yfat.exe	28
PID 1996 wrote to memory of 396	1996	102.exe	31
PID 1996 wrote to memory of 396	1996	102.exe	31
PID 1996 wrote to memory of 396	1996	102.exe	31
PID 1996 wrote to memory of 396	1996	102.exe	31
PID 1996 wrote to memory of 396	1996	102.exe	31
PID 1996 wrote to memory of 396	1996	102.exe	31
PID 1996 wrote to memory of 396	1996	102.exe	31
PID 1996 wrote to memory of 396	1996	102.exe	31
PID 1996 wrote to memory of 396	1996	102.exe	31
PID 884 wrote to memory of 1728	884	yfat.exe	32
PID 884 wrote to memory of 1728	884	yfat.exe	32
PID 884 wrote to memory of 1728	884	yfat.exe	32
PID 884 wrote to memory of 1728	884	yfat.exe	32
PID 884 wrote to memory of 1728	884	yfat.exe	32
PID 884 wrote to memory of 1520	884	yfat.exe	33
PID 884 wrote to memory of 1520	884	yfat.exe	33
PID 884 wrote to memory of 1520	884	yfat.exe	33
PID 884 wrote to memory of 1520	884	yfat.exe	33
PID 884 wrote to memory of 1520	884	yfat.exe	33
PID 884 wrote to memory of 1572	884	yfat.exe	34
PID 884 wrote to memory of 1572	884	yfat.exe	34
PID 884 wrote to memory of 1572	884	yfat.exe	34

C:\Windows\system32\taskhost.exe
"taskhost.exe"
1⤵
PID:1124

C:\Windows\system32\Dwm.exe
"C:\Windows\system32\Dwm.exe"
1⤵
PID:1236

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1304
- C:\Users\Admin\AppData\Local\Temp\102.exe
  "C:\Users\Admin\AppData\Local\Temp\102.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1808
- - C:\Users\Admin\AppData\Local\Temp\102.exe
    "C:\Users\Admin\AppData\Local\Temp\102.exe"
    3⤵
    - Loads dropped DLL
    - Suspicious use of SetThreadContext
    - Modifies Internet Explorer settings
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1996
  - - C:\Users\Admin\AppData\Roaming\Idynuq\yfat.exe
      "C:\Users\Admin\AppData\Roaming\Idynuq\yfat.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:1496
    - - C:\Users\Admin\AppData\Roaming\Idynuq\yfat.exe
        
        "C:\Users\Admin\AppData\Roaming\Idynuq\yfat.exe"
        5⤵
        Executes dropped EXE
        Adds Run key to start application
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of WriteProcessMemory
        
        PID:884
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\tmpbef1cd2d.bat"
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:396

C:\Windows\system32\conhost.exe
\??\C:\Windows\system32\conhost.exe "-1753596712-2028124592-1519940733-15449673741281035079-76178510421151214241323459401"
1⤵
PID:1728

C:\Program Files\Windows Mail\WinMail.exe
"C:\Program Files\Windows Mail\WinMail.exe" -Embedding
1⤵
- NTFS ADS
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
PID:1520

C:\Windows\system32\DllHost.exe
C:\Windows\system32\DllHost.exe /Processid:{F9717507-6651-4EDB-BFF7-AE615179BCCF}
1⤵
PID:1572

C:\Windows\system32\DllHost.exe
C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
1⤵
PID:1616

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Idynuq\yfat.exe

Filesize
296KB

MD5
e367f2d3ba31a32e697557a123a2728a

SHA1
502ebd34c83063c97e47d90601ecf8c1480a87df

SHA256
82bff55fe55a63cf1278f228487fb05e1fc88785d0f306fe37f27d1a2fe2b1e4

SHA512
400825f5e66f1401cb6d2f348b6bdc911fc867ca7787a5f964d203fe50e3fccd0024194239a602ae6a62414abc3fc97f60dd5746425c917ca2f70f0b9b17e2be

Download Submit
C:\Users\Admin\AppData\Roaming\Idynuq\yfat.exe

Filesize
296KB

MD5
e367f2d3ba31a32e697557a123a2728a

SHA1
502ebd34c83063c97e47d90601ecf8c1480a87df

SHA256
82bff55fe55a63cf1278f228487fb05e1fc88785d0f306fe37f27d1a2fe2b1e4

SHA512
400825f5e66f1401cb6d2f348b6bdc911fc867ca7787a5f964d203fe50e3fccd0024194239a602ae6a62414abc3fc97f60dd5746425c917ca2f70f0b9b17e2be

Download Submit
C:\Users\Admin\AppData\Roaming\Idynuq\yfat.exe

Filesize
296KB

MD5
e367f2d3ba31a32e697557a123a2728a

SHA1
502ebd34c83063c97e47d90601ecf8c1480a87df

SHA256
82bff55fe55a63cf1278f228487fb05e1fc88785d0f306fe37f27d1a2fe2b1e4

SHA512
400825f5e66f1401cb6d2f348b6bdc911fc867ca7787a5f964d203fe50e3fccd0024194239a602ae6a62414abc3fc97f60dd5746425c917ca2f70f0b9b17e2be

Download Submit
C:\Users\Admin\AppData\Roaming\Toubi\ecig.aso

Filesize
337B

MD5
8b8bb225c04cd49103b7a83a11053c66

SHA1
1595a87c9ad1b558f7df919166f7ba55f5a9b791

SHA256
c2fc25de1dafc6fd1a549f6adc7e47a456a67d2525d6efba925bee6156da0b15

SHA512
53613341802418d3b43e3b0feaf9c22ca32a8e0d747f7c894d0f05dbae50d419b08c3f54d91fffa8522dce963008540b1a94e6bff2e9123323759e8f444d3af2

Download Submit
\Users\Admin\AppData\Roaming\Idynuq\yfat.exe

Filesize
296KB

MD5
e367f2d3ba31a32e697557a123a2728a

SHA1
502ebd34c83063c97e47d90601ecf8c1480a87df

SHA256
82bff55fe55a63cf1278f228487fb05e1fc88785d0f306fe37f27d1a2fe2b1e4

SHA512
400825f5e66f1401cb6d2f348b6bdc911fc867ca7787a5f964d203fe50e3fccd0024194239a602ae6a62414abc3fc97f60dd5746425c917ca2f70f0b9b17e2be

Download Submit
\Users\Admin\AppData\Roaming\Idynuq\yfat.exe

Filesize
296KB

MD5
e367f2d3ba31a32e697557a123a2728a

SHA1
502ebd34c83063c97e47d90601ecf8c1480a87df

SHA256
82bff55fe55a63cf1278f228487fb05e1fc88785d0f306fe37f27d1a2fe2b1e4

SHA512
400825f5e66f1401cb6d2f348b6bdc911fc867ca7787a5f964d203fe50e3fccd0024194239a602ae6a62414abc3fc97f60dd5746425c917ca2f70f0b9b17e2be

Download Submit
memory/396-112-0x0000000000050000-0x0000000000077000-memory.dmp

Filesize
156KB

Download
memory/396-111-0x0000000000050000-0x0000000000077000-memory.dmp

Filesize
156KB

Download
memory/396-110-0x0000000000050000-0x0000000000077000-memory.dmp

Filesize
156KB

Download
memory/396-108-0x0000000000050000-0x0000000000077000-memory.dmp

Filesize
156KB

Download
memory/396-118-0x0000000000050000-0x0000000000077000-memory.dmp

Filesize
156KB

Download
memory/884-104-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/884-102-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/1124-78-0x0000000000410000-0x0000000000437000-memory.dmp

Filesize
156KB

Download
memory/1124-80-0x0000000000410000-0x0000000000437000-memory.dmp

Filesize
156KB

Download
memory/1124-81-0x0000000000410000-0x0000000000437000-memory.dmp

Filesize
156KB

Download
memory/1124-82-0x0000000000410000-0x0000000000437000-memory.dmp

Filesize
156KB

Download
memory/1124-83-0x0000000000410000-0x0000000000437000-memory.dmp

Filesize
156KB

Download
memory/1236-88-0x0000000001B40000-0x0000000001B67000-memory.dmp

Filesize
156KB

Download
memory/1236-89-0x0000000001B40000-0x0000000001B67000-memory.dmp

Filesize
156KB

Download
memory/1236-86-0x0000000001B40000-0x0000000001B67000-memory.dmp

Filesize
156KB

Download
memory/1236-87-0x0000000001B40000-0x0000000001B67000-memory.dmp

Filesize
156KB

Download
memory/1304-95-0x0000000002AC0000-0x0000000002AE7000-memory.dmp

Filesize
156KB

Download
memory/1304-93-0x0000000002AC0000-0x0000000002AE7000-memory.dmp

Filesize
156KB

Download
memory/1304-94-0x0000000002AC0000-0x0000000002AE7000-memory.dmp

Filesize
156KB

Download
memory/1304-92-0x0000000002AC0000-0x0000000002AE7000-memory.dmp

Filesize
156KB

Download
memory/1496-76-0x0000000000400000-0x000000000043E000-memory.dmp

Filesize
248KB

Download
memory/1496-70-0x0000000000400000-0x000000000043E000-memory.dmp

Filesize
248KB

Download
memory/1520-143-0x0000000004270000-0x0000000004297000-memory.dmp

Filesize
156KB

Download
memory/1520-141-0x0000000004270000-0x0000000004297000-memory.dmp

Filesize
156KB

Download
memory/1520-119-0x000007FEFBFB1000-0x000007FEFBFB3000-memory.dmp

Filesize
8KB

Download
memory/1520-144-0x0000000004270000-0x0000000004297000-memory.dmp

Filesize
156KB

Download
memory/1520-142-0x0000000004270000-0x0000000004297000-memory.dmp

Filesize
156KB

Download
memory/1520-127-0x0000000001F20000-0x0000000001F30000-memory.dmp

Filesize
64KB

Download
memory/1520-121-0x0000000000350000-0x0000000000360000-memory.dmp

Filesize
64KB

Download
memory/1520-120-0x000007FEF6A01000-0x000007FEF6A03000-memory.dmp

Filesize
8KB

Download
memory/1728-138-0x0000000000140000-0x0000000000167000-memory.dmp

Filesize
156KB

Download
memory/1728-137-0x0000000000140000-0x0000000000167000-memory.dmp

Filesize
156KB

Download
memory/1728-136-0x0000000000140000-0x0000000000167000-memory.dmp

Filesize
156KB

Download
memory/1728-135-0x0000000000140000-0x0000000000167000-memory.dmp

Filesize
156KB

Download
memory/1808-60-0x0000000000400000-0x000000000043E000-memory.dmp

Filesize
248KB

Download
memory/1808-56-0x0000000000400000-0x000000000043E000-memory.dmp

Filesize
248KB

Download
memory/1996-63-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/1996-115-0x0000000000530000-0x0000000000557000-memory.dmp

Filesize
156KB

Download
memory/1996-114-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/1996-61-0x0000000075511000-0x0000000075513000-memory.dmp

Filesize
8KB

Download
memory/1996-62-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/1996-57-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/1996-105-0x0000000000530000-0x000000000056E000-memory.dmp

Filesize
248KB

Download
memory/1996-103-0x0000000000530000-0x000000000056E000-memory.dmp

Filesize
248KB

Download
memory/1996-100-0x0000000000530000-0x0000000000557000-memory.dmp

Filesize
156KB

Download
memory/1996-101-0x0000000000530000-0x0000000000557000-memory.dmp

Filesize
156KB

Download
memory/1996-99-0x0000000000530000-0x0000000000557000-memory.dmp

Filesize
156KB

Download
memory/1996-98-0x0000000000530000-0x0000000000557000-memory.dmp

Filesize
156KB

Download