471325daa2bc75f50856e93e9de088386556fc3ead653894d5c2a67f2a8b4975

Resubmissions

01/07/2020, 13:24

200701-3ayryqmz2610

30/06/2020, 05:41

200630-m1a6tbcjt210

Analysis

max time kernel
136s
max time network
136s
platform
windows10_x64
resource
win10v200430
submitted
30/06/2020, 05:41

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General

Target
data.bin.exe
Size 119KB
Sample200630-m1a6tbcjt2
SHA256 471325daa2bc75f50856e93e9de088386556fc3ead653894d5c2a67f2a8b4975
MD5 f500854e3cf9556688203a3d869b7d6d
SHA1 281aab2eb26f31cf2255e2f5a467fc5eebda8df8
SHA512 bccb54a68003bde3304dd6824f4bc6a3a5f06995a85bf371b1581fd00e0dc9ff40a1765594b61da9a2cbdf9c0372916a8694af2a66759a534b746981418101d4
MD5 SHA1 SHA512

Score

10^/10

persistence

Malware Config

Signatures

Suspicious behavior: EnumeratesProcesses 15 IoCs

pid	Process
3888	WerFault.exe
3888	WerFault.exe
3888	WerFault.exe
3888	WerFault.exe
3888	WerFault.exe
3888	WerFault.exe
3888	WerFault.exe
3888	WerFault.exe
3888	WerFault.exe
3888	WerFault.exe
3888	WerFault.exe
3888	WerFault.exe
3888	WerFault.exe
2500	gennt.exe
2500	gennt.exe

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\ProgramData\\ac63c1c868e87043fad8\\gennt.exe\""	gennt.exe

Enumerates connected drives 3 TTPs

Query Registry
T1012

Peripheral Device Discovery
T1120

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 724 wrote to memory of 2500	724	data.bin.exe	72
PID 724 wrote to memory of 2500	724	data.bin.exe	72
PID 724 wrote to memory of 2500	724	data.bin.exe	72
PID 2500 wrote to memory of 2764	2500	gennt.exe	73
PID 2500 wrote to memory of 2764	2500	gennt.exe	73
PID 2500 wrote to memory of 2764	2500	gennt.exe	73
PID 2500 wrote to memory of 2764	2500	gennt.exe	73
PID 2500 wrote to memory of 2764	2500	gennt.exe	73
PID 2500 wrote to memory of 2764	2500	gennt.exe	73
PID 2500 wrote to memory of 2764	2500	gennt.exe	73
PID 2500 wrote to memory of 2764	2500	gennt.exe	73
PID 2500 wrote to memory of 984	2500	gennt.exe	76
PID 2500 wrote to memory of 984	2500	gennt.exe	76
PID 2500 wrote to memory of 984	2500	gennt.exe	76

Executes dropped EXE 1 IoCs

pid	Process
2500	gennt.exe

Deletes itself 1 IoCs

pid	Process
2500	gennt.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3888	2764	WerFault.exe	73

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeRestorePrivilege	3888	WerFault.exe
Token: SeBackupPrivilege	3888	WerFault.exe
Token: SeDebugPrivilege	3888	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\data.bin.exe
"C:\Users\Admin\AppData\Local\Temp\data.bin.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:724
- C:\ProgramData\ac63c1c868e87043fad8\gennt.exe
  C:\ProgramData\ac63c1c868e87043fad8\gennt.exe "C:\Users\Admin\AppData\Local\Temp\data.bin.exe" ensgJJ
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Modifies WinLogon for persistence
  - Suspicious use of WriteProcessMemory
  - Executes dropped EXE
  - Deletes itself
  PID:2500
- - C:\Windows\SysWOW64\secinit.exe
    C:\ProgramData\ac63c1c868e87043fad8\gennt.exe
    3⤵
    PID:2764
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2764 -s 664
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Program crash
      Suspicious use of AdjustPrivilegeToken
      PID:3888
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" powershell.exe -Command "& {Add-MpPreference -ExclusionPath C:\ProgramData\ac63c1c868e87043fad8}"
    3⤵
    PID:984

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3888-4-0x00000000043A0000-0x00000000043A1000-memory.dmp

Download

memory/3888-11-0x0000000004B20000-0x0000000004B21000-memory.dmp

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