f784d412a56ccd414525c22e6b2e7c9482040e89be20fdb1f2e4db0016812ea7

Analysis

max time kernel
77s
max time network
111s
platform
windows10_x64
resource
win10v200722
submitted
28/08/2020, 06:34

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General

Target
contract document.exe
Size 821KB
Sample200828-5rshec2p8j
SHA256 f784d412a56ccd414525c22e6b2e7c9482040e89be20fdb1f2e4db0016812ea7
MD5 6f3ce8fb3b14b587b32f612292e2ac55
SHA1 b326a29c550dfdad23775ad734c9ca9653078b9f
SHA512 5fb520283e2dd276c7bf36e1cfbf152603379fd8eb8b218ce8412a83ba520380d11c6bea210b01b29af53822a9c618c3ee9d95c0b466f09d30a5fe36450d1f6d
MD5 SHA1 SHA512

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
3688	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 584 set thread context of 196	584	contract document.exe	79

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 1 IoCs

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

persistence

Scheduled Task

T1053

pid	Process
3084	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 = 6b894d80157dd601	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 10 IoCs

pid	Process
584	contract document.exe
584	contract document.exe
584	contract document.exe
584	contract document.exe
584	contract document.exe
196	contract document.exe
196	contract document.exe
3688	powershell.exe
3688	powershell.exe
3688	powershell.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3828	svchost.exe
Token: SeCreatePagefilePrivilege	3828	svchost.exe
Token: SeDebugPrivilege	584	contract document.exe
Token: SeDebugPrivilege	196	contract document.exe
Token: SeDebugPrivilege	3688	powershell.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 584 wrote to memory of 3084	584	contract document.exe	76
PID 584 wrote to memory of 3084	584	contract document.exe	76
PID 584 wrote to memory of 3084	584	contract document.exe	76
PID 584 wrote to memory of 220	584	contract document.exe	78
PID 584 wrote to memory of 220	584	contract document.exe	78
PID 584 wrote to memory of 220	584	contract document.exe	78
PID 584 wrote to memory of 196	584	contract document.exe	79
PID 584 wrote to memory of 196	584	contract document.exe	79
PID 584 wrote to memory of 196	584	contract document.exe	79
PID 584 wrote to memory of 196	584	contract document.exe	79
PID 584 wrote to memory of 196	584	contract document.exe	79
PID 584 wrote to memory of 196	584	contract document.exe	79
PID 584 wrote to memory of 196	584	contract document.exe	79
PID 584 wrote to memory of 196	584	contract document.exe	79
PID 196 wrote to memory of 3688	196	contract document.exe	81
PID 196 wrote to memory of 3688	196	contract document.exe	81
PID 196 wrote to memory of 3688	196	contract document.exe	81

C:\Users\Admin\AppData\Local\Temp\contract document.exe
"C:\Users\Admin\AppData\Local\Temp\contract document.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:584
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\cscqYzNqmoZ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5218.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:3084
- C:\Users\Admin\AppData\Local\Temp\contract document.exe
  "{path}"
  2⤵
  PID:220
- C:\Users\Admin\AppData\Local\Temp\contract document.exe
  "{path}"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:196
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "powershell" Start-Sleep -Seconds 2; Remove-Item -path 'C:\Users\Admin\AppData\Local\Temp\contract document.exe'
    3⤵
    - Deletes itself
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3688

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:3828

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/196-22-0x0000000005780000-0x0000000005781000-memory.dmp

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memory/196-17-0x0000000073DB0000-0x000000007449E000-memory.dmp

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memory/196-14-0x0000000000400000-0x0000000000486000-memory.dmp

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memory/584-8-0x0000000007860000-0x0000000007861000-memory.dmp

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memory/584-0-0x0000000073DB0000-0x000000007449E000-memory.dmp

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memory/584-9-0x0000000007DC0000-0x0000000007E77000-memory.dmp

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memory/584-10-0x0000000007F20000-0x0000000007F21000-memory.dmp

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memory/584-11-0x000000000A540000-0x000000000A5EB000-memory.dmp

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memory/584-7-0x0000000007850000-0x0000000007853000-memory.dmp

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memory/584-6-0x00000000056F0000-0x00000000056F1000-memory.dmp

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memory/584-5-0x0000000005480000-0x0000000005481000-memory.dmp

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memory/584-4-0x0000000005520000-0x0000000005521000-memory.dmp

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memory/584-3-0x0000000005980000-0x0000000005981000-memory.dmp

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memory/584-1-0x0000000000B80000-0x0000000000B81000-memory.dmp

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memory/3688-24-0x0000000073E30000-0x000000007451E000-memory.dmp

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memory/3688-25-0x0000000004180000-0x0000000004181000-memory.dmp

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memory/3688-26-0x0000000006CE0000-0x0000000006CE1000-memory.dmp

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memory/3688-27-0x0000000006BE0000-0x0000000006BE1000-memory.dmp

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memory/3688-30-0x00000000075D0000-0x00000000075D1000-memory.dmp

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memory/3688-31-0x00000000079A0000-0x00000000079A1000-memory.dmp

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memory/3688-32-0x0000000007EA0000-0x0000000007EA1000-memory.dmp

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memory/3688-33-0x0000000007C10000-0x0000000007C11000-memory.dmp

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memory/3688-34-0x0000000009400000-0x0000000009401000-memory.dmp

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memory/3688-35-0x00000000089B0000-0x00000000089B1000-memory.dmp

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memory/3688-36-0x0000000008D80000-0x0000000008D81000-memory.dmp

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memory/3688-37-0x0000000008A00000-0x0000000008A01000-memory.dmp

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