0eeac411948772d2f29c4ed276d4f4419e17ab82762afb7d33ebd28ca00f6fa6

Analysis

max time kernel
68s
max time network
156s
platform
windows7_x64
resource
win7
submitted
10/07/2020, 17:06

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General

Target

Bill of Lading.xlsm
Size

52KB
MD5

0cac1b783270081d56ad48554de3d0e8
SHA1

2afa117869dfb3cbf34979e2d01dd64de663e9a9
SHA256

0eeac411948772d2f29c4ed276d4f4419e17ab82762afb7d33ebd28ca00f6fa6
SHA512

10e9cf38b7ec171e1b442571c538288b09994e2226f58dda8e66d6e990fefae9f01499890f72445a54e3b8fdc4a1a2e31c83d6e1d01d2f74d32eb88c35d48983

Score

10^/10

persistence

Malware Config

Signatures

Adds Run entry to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\Advf = "C:\\Users\\Admin\\AppData\\Local\\Advf\\Advf.hta"	aSNbkyKnzhtPT.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1544	EXCEL.EXE
1544	EXCEL.EXE
1544	EXCEL.EXE
1044	ieinstal.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1540 set thread context of 1044	1540	aSNbkyKnzhtPT.exe	37

Launches Equation Editor 1 TTPs 1 IoCs

Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

exploit

Exploitation for Client Execution

T1203

pid	Process
752	EQNEDT32.EXE

NTFS ADS 1 IoCs

description	ioc	Process
File created	C:\programdata\asc.txt:script1.vbs	EXCEL.EXE

Executes dropped EXE 1 IoCs

pid	Process
1540	aSNbkyKnzhtPT.exe

Script User-Agent 2 IoCs

description	flow	ioc
HTTP User-Agent header	1	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	2	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Office loads VBA resources, possible macro or embedded object present

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1544	EXCEL.EXE

Suspicious use of WriteProcessMemory 32 IoCs

description	pid	Process	procid_target
PID 752 wrote to memory of 1052	752	EQNEDT32.EXE	25
PID 752 wrote to memory of 1052	752	EQNEDT32.EXE	25
PID 752 wrote to memory of 1052	752	EQNEDT32.EXE	25
PID 752 wrote to memory of 1052	752	EQNEDT32.EXE	25
PID 1052 wrote to memory of 1496	1052	cmd.exe	27
PID 1052 wrote to memory of 1496	1052	cmd.exe	27
PID 1052 wrote to memory of 1496	1052	cmd.exe	27
PID 1052 wrote to memory of 1496	1052	cmd.exe	27
PID 1544 wrote to memory of 1836	1544	EXCEL.EXE	28
PID 1544 wrote to memory of 1836	1544	EXCEL.EXE	28
PID 1544 wrote to memory of 1836	1544	EXCEL.EXE	28
PID 1496 wrote to memory of 1828	1496	cscript.exe	31
PID 1496 wrote to memory of 1828	1496	cscript.exe	31
PID 1496 wrote to memory of 1828	1496	cscript.exe	31
PID 1496 wrote to memory of 1828	1496	cscript.exe	31
PID 1828 wrote to memory of 1740	1828	cmd.exe	33
PID 1828 wrote to memory of 1740	1828	cmd.exe	33
PID 1828 wrote to memory of 1740	1828	cmd.exe	33
PID 1828 wrote to memory of 1740	1828	cmd.exe	33
PID 1836 wrote to memory of 1540	1836	cscript.exe	34
PID 1836 wrote to memory of 1540	1836	cscript.exe	34
PID 1836 wrote to memory of 1540	1836	cscript.exe	34
PID 1836 wrote to memory of 1540	1836	cscript.exe	34
PID 1540 wrote to memory of 1044	1540	aSNbkyKnzhtPT.exe	37
PID 1540 wrote to memory of 1044	1540	aSNbkyKnzhtPT.exe	37
PID 1540 wrote to memory of 1044	1540	aSNbkyKnzhtPT.exe	37
PID 1540 wrote to memory of 1044	1540	aSNbkyKnzhtPT.exe	37
PID 1540 wrote to memory of 1044	1540	aSNbkyKnzhtPT.exe	37
PID 1540 wrote to memory of 1044	1540	aSNbkyKnzhtPT.exe	37
PID 1540 wrote to memory of 1044	1540	aSNbkyKnzhtPT.exe	37
PID 1540 wrote to memory of 1044	1540	aSNbkyKnzhtPT.exe	37
PID 1540 wrote to memory of 1044	1540	aSNbkyKnzhtPT.exe	37

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

description	pid	pid_target	Process	procid_target
Parent C:\Program Files\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	1836	1544	cscript.exe	23

Blacklisted process makes network request 2 IoCs

flow	pid	Process
1	1836	cscript.exe
2	1740	cscript.exe

C:\Program Files\Microsoft Office\Office14\EXCEL.EXE
"C:\Program Files\Microsoft Office\Office14\EXCEL.EXE" /dde "C:\Users\Admin\AppData\Local\Temp\Bill of Lading.xlsm"
1⤵
- Suspicious use of SetWindowsHookEx
- NTFS ADS
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of WriteProcessMemory
PID:1544
- C:\Windows\System32\cscript.exe
  "C:\Windows\System32\cscript.exe" C:\programdata\asc.txt:script1.vbs
  2⤵
  - Suspicious use of WriteProcessMemory
  - Process spawned unexpected child process
  - Blacklisted process makes network request
  PID:1836
- - C:\programdata\aSNbkyKnzhtPT.exe
    C:\programdata\aSNbkyKnzhtPT.exe
    3⤵
    - Adds Run entry to start application
    - Suspicious use of SetThreadContext
    - Executes dropped EXE
    - Suspicious use of WriteProcessMemory
    PID:1540
  - - C:\Program Files (x86)\internet explorer\ieinstal.exe
      "C:\Program Files (x86)\internet explorer\ieinstal.exe"
      4⤵
      Suspicious use of SetWindowsHookEx
      PID:1044

C:\Program Files\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
"C:\Program Files\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
1⤵
- Launches Equation Editor
- Suspicious use of WriteProcessMemory
PID:752
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ren %tmp%\mm v&cScriPT %tmp%\v?..wsf C
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1052
- - C:\Windows\SysWOW64\cscript.exe
    cScriPT C:\Users\Admin\AppData\Local\Temp\v?..wsf C
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1496
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c cscript C:\Users\Admin\AppData\Local\Temp\xx.vbs
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1828
    - - C:\Windows\SysWOW64\cscript.exe
        
        cscript C:\Users\Admin\AppData\Local\Temp\xx.vbs
        5⤵
        Blacklisted process makes network request
        
        PID:1740

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Exploitation for Client Execution

T1203

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Web Service

T1102

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

memory/1044-16-0x0000000000400000-0x0000000000554000-memory.dmp

Filesize
1.3MB

Download
memory/1044-18-0x0000000000400000-0x0000000000554000-memory.dmp

Filesize
1.3MB

Download
memory/1496-9-0x0000000002840000-0x0000000002844000-memory.dmp

Filesize
16KB

Download
memory/1544-3-0x0000000005E40000-0x0000000005F40000-memory.dmp

Filesize
1024KB

Download
memory/1740-14-0x00000000027A0000-0x00000000027A4000-memory.dmp

Filesize
16KB

Download
memory/1836-13-0x00000000023E0000-0x00000000023E4000-memory.dmp

Filesize
16KB

Download