aec7bb752bfb4fb49d6d363db8393e84a05da72cd3b54a9b368bc43adcd3f08d

Analysis

max time kernel
151s
max time network
150s
platform
windows10_x64
resource
win10v200722
submitted
31/08/2020, 06:01

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General

Target
Invoice.exe
Size 496KB
Sample200831-kleh5vrflj
SHA256 aec7bb752bfb4fb49d6d363db8393e84a05da72cd3b54a9b368bc43adcd3f08d
MD5 537430be99baa01b2d44782c7ca1c05b
SHA1 61dc8f54fb15f2fbd73c0e9e0dda2c6bc8fa29e8
SHA512 69378eaa8fa052bddbbf6bb6c305a0a04af49e49670d19a09a8221854c26b17439b2217b94c48959f36bc2182d4d57fc25b027733076458534d5046ca7d0b429
MD5 SHA1 SHA512

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
3236	images.exe
2160	images.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Images = "C:\\ProgramData\\images.exe"	Invoice.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3876 set thread context of 3768	3876	Invoice.exe	77
PID 3236 set thread context of 2160	3236	images.exe	81

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\ServiceProfiles\LocalService\winhttp\cachev3.dat	svchost.exe

Creates scheduled task(s) 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
3124	schtasks.exe
3808	schtasks.exe

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	svchost.exe
Key created	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7\WpadDecisionReason = "1"	svchost.exe
Set value (data)	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7\WpadDecisionTime = 518bff656c7fd601	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7\WpadDecision = "0"	svchost.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
3876	Invoice.exe
3876	Invoice.exe
3876	Invoice.exe
3876	Invoice.exe
3236	images.exe
3236	images.exe
3236	images.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeShutdownPrivilege	1784	svchost.exe
Token: SeCreatePagefilePrivilege	1784	svchost.exe
Token: SeDebugPrivilege	3876	Invoice.exe
Token: SeDebugPrivilege	3236	images.exe

Suspicious use of WriteProcessMemory 31 IoCs

description	pid	Process	procid_target
PID 3876 wrote to memory of 3124	3876	Invoice.exe	75
PID 3876 wrote to memory of 3124	3876	Invoice.exe	75
PID 3876 wrote to memory of 3124	3876	Invoice.exe	75
PID 3876 wrote to memory of 3768	3876	Invoice.exe	77
PID 3876 wrote to memory of 3768	3876	Invoice.exe	77
PID 3876 wrote to memory of 3768	3876	Invoice.exe	77
PID 3876 wrote to memory of 3768	3876	Invoice.exe	77
PID 3876 wrote to memory of 3768	3876	Invoice.exe	77
PID 3876 wrote to memory of 3768	3876	Invoice.exe	77
PID 3876 wrote to memory of 3768	3876	Invoice.exe	77
PID 3876 wrote to memory of 3768	3876	Invoice.exe	77
PID 3876 wrote to memory of 3768	3876	Invoice.exe	77
PID 3876 wrote to memory of 3768	3876	Invoice.exe	77
PID 3876 wrote to memory of 3768	3876	Invoice.exe	77
PID 3768 wrote to memory of 3236	3768	Invoice.exe	78
PID 3768 wrote to memory of 3236	3768	Invoice.exe	78
PID 3768 wrote to memory of 3236	3768	Invoice.exe	78
PID 3236 wrote to memory of 3808	3236	images.exe	79
PID 3236 wrote to memory of 3808	3236	images.exe	79
PID 3236 wrote to memory of 3808	3236	images.exe	79
PID 3236 wrote to memory of 2160	3236	images.exe	81
PID 3236 wrote to memory of 2160	3236	images.exe	81
PID 3236 wrote to memory of 2160	3236	images.exe	81
PID 3236 wrote to memory of 2160	3236	images.exe	81
PID 3236 wrote to memory of 2160	3236	images.exe	81
PID 3236 wrote to memory of 2160	3236	images.exe	81
PID 3236 wrote to memory of 2160	3236	images.exe	81
PID 3236 wrote to memory of 2160	3236	images.exe	81
PID 3236 wrote to memory of 2160	3236	images.exe	81
PID 3236 wrote to memory of 2160	3236	images.exe	81
PID 3236 wrote to memory of 2160	3236	images.exe	81

C:\Users\Admin\AppData\Local\Temp\Invoice.exe
"C:\Users\Admin\AppData\Local\Temp\Invoice.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3876
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\aaJbJKr" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6D32.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:3124
- C:\Users\Admin\AppData\Local\Temp\Invoice.exe
  "{path}"
  2⤵
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:3768
- - C:\ProgramData\images.exe
    "C:\ProgramData\images.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3236
  - - C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\aaJbJKr" /XML "C:\Users\Admin\AppData\Local\Temp\tmpFDBA.tmp"
      4⤵
      Creates scheduled task(s)
      PID:3808
  - - C:\ProgramData\images.exe
      "{path}"
      4⤵
      Executes dropped EXE
      PID:2160

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService -s WinHttpAutoProxySvc
1⤵
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
PID:1784

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2160-33-0x0000000000400000-0x0000000000554000-memory.dmp

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memory/3236-18-0x0000000073530000-0x0000000073C1E000-memory.dmp

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memory/3768-12-0x0000000000400000-0x0000000000554000-memory.dmp

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memory/3768-14-0x0000000000400000-0x0000000000554000-memory.dmp

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memory/3876-9-0x0000000008A00000-0x0000000008A33000-memory.dmp

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memory/3876-4-0x0000000006DF0000-0x0000000006DF1000-memory.dmp

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memory/3876-3-0x0000000007210000-0x0000000007211000-memory.dmp

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memory/3876-0-0x0000000073530000-0x0000000073C1E000-memory.dmp

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memory/3876-5-0x0000000006DD0000-0x0000000006DD1000-memory.dmp

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memory/3876-8-0x0000000008B40000-0x0000000008B41000-memory.dmp

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memory/3876-7-0x0000000000A10000-0x0000000000A62000-memory.dmp

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memory/3876-1-0x0000000000040000-0x0000000000041000-memory.dmp

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memory/3876-6-0x00000000071E0000-0x00000000071E3000-memory.dmp

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