agenttesla | fda9cdc6d189a4f40199d09a2cd49522189e9494d6a7a3dc0d5bdd5faddb355a

Analysis

max time kernel
135s
max time network
125s
platform
windows10_x64
resource
win10v20201028
submitted
09/11/2020, 19:39

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General

Target
bbcrypted.exe
Size 724KB
Sample201109-nw27x6fdr2
SHA256 fda9cdc6d189a4f40199d09a2cd49522189e9494d6a7a3dc0d5bdd5faddb355a
MD5 0bdce81070764a570057b6381f91c225
SHA1 258b9e1189aa620632803aa1ede6cec3c0d7490b
SHA512 3dc23b61bc6044b99c0438d80aec8697073198731c59762b6e640b9283bd3c21ce9b25e356c4cf263f497ecca573f3d78bac3d56ff6402fb3640212474659866
MD5 SHA1 SHA512

Score

10^/10

agenttesla agilenet keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol
smtp
Host
mail.islandkingpools.com
Port
587
Username
[email protected]
Password
Accounts$678

Signatures

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

AgentTesla Payload 2 IoCs

resource	yara_rule
behavioral2/memory/584-41-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral2/memory/584-42-0x000000000044CD4E-mapping.dmp	family_agenttesla

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	InstallUtil.exe

Executes dropped EXE 1 IoCs

pid	Process
2276	appLaunch.exe

Obfuscated with Agile.Net obfuscator 1 IoCs

Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

agilenet

resource	yara_rule
behavioral2/memory/580-3-0x00000000013F0000-0x00000000013FF000-memory.dmp	agile_net

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run\appLaunch = "C:\\Windows\\system32\\pcalua.exe -a C:\\Users\\Admin\\AppData\\Roaming\\appLaunch.exe"	reg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2276 set thread context of 584	2276	appLaunch.exe	84

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
2528	REG.exe

Suspicious behavior: EnumeratesProcesses 22 IoCs

pid	Process
580	bbcrypted.exe
580	bbcrypted.exe
580	bbcrypted.exe
580	bbcrypted.exe
580	bbcrypted.exe
580	bbcrypted.exe
580	bbcrypted.exe
580	bbcrypted.exe
580	bbcrypted.exe
580	bbcrypted.exe
580	bbcrypted.exe
580	bbcrypted.exe
580	bbcrypted.exe
580	bbcrypted.exe
3948	powershell.exe
3948	powershell.exe
3948	powershell.exe
2276	appLaunch.exe
2276	appLaunch.exe
2276	appLaunch.exe
584	InstallUtil.exe
584	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	580	bbcrypted.exe
Token: SeDebugPrivilege	3948	powershell.exe
Token: SeDebugPrivilege	2276	appLaunch.exe
Token: SeDebugPrivilege	584	InstallUtil.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 580 wrote to memory of 3024	580	bbcrypted.exe	78
PID 580 wrote to memory of 3024	580	bbcrypted.exe	78
PID 580 wrote to memory of 3024	580	bbcrypted.exe	78
PID 3024 wrote to memory of 2268	3024	cmd.exe	80
PID 3024 wrote to memory of 2268	3024	cmd.exe	80
PID 3024 wrote to memory of 2268	3024	cmd.exe	80
PID 580 wrote to memory of 3948	580	bbcrypted.exe	81
PID 580 wrote to memory of 3948	580	bbcrypted.exe	81
PID 580 wrote to memory of 3948	580	bbcrypted.exe	81
PID 3948 wrote to memory of 2276	3948	powershell.exe	83
PID 3948 wrote to memory of 2276	3948	powershell.exe	83
PID 3948 wrote to memory of 2276	3948	powershell.exe	83
PID 2276 wrote to memory of 584	2276	appLaunch.exe	84
PID 2276 wrote to memory of 584	2276	appLaunch.exe	84
PID 2276 wrote to memory of 584	2276	appLaunch.exe	84
PID 2276 wrote to memory of 584	2276	appLaunch.exe	84
PID 2276 wrote to memory of 584	2276	appLaunch.exe	84
PID 2276 wrote to memory of 584	2276	appLaunch.exe	84
PID 2276 wrote to memory of 584	2276	appLaunch.exe	84
PID 2276 wrote to memory of 584	2276	appLaunch.exe	84
PID 584 wrote to memory of 2528	584	InstallUtil.exe	86
PID 584 wrote to memory of 2528	584	InstallUtil.exe	86
PID 584 wrote to memory of 2528	584	InstallUtil.exe	86

C:\Users\Admin\AppData\Local\Temp\bbcrypted.exe
"C:\Users\Admin\AppData\Local\Temp\bbcrypted.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:580
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /c REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v appLaunch /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\appLaunch.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3024
- - C:\Windows\SysWOW64\reg.exe
    REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v appLaunch /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\appLaunch.exe"
    3⤵
    - Adds Run key to start application
    PID:2268
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Start-Process C:\Users\Admin\AppData\Roaming\appLaunch.exe
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3948
- - C:\Users\Admin\AppData\Roaming\appLaunch.exe
    "C:\Users\Admin\AppData\Roaming\appLaunch.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2276
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
      4⤵
      Drops file in Drivers directory
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:584
    - - C:\Windows\SysWOW64\REG.exe
        
        REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v NoRun /t REG_DWORD /d 1 /f
        5⤵
        Modifies registry key
        
        PID:2528

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/580-0-0x0000000073F80000-0x000000007466E000-memory.dmp

Download

memory/580-1-0x0000000000D20000-0x0000000000D21000-memory.dmp

Download

memory/580-3-0x00000000013F0000-0x00000000013FF000-memory.dmp

Download

memory/580-4-0x0000000006410000-0x0000000006411000-memory.dmp

Download

memory/580-5-0x0000000005700000-0x0000000005702000-memory.dmp

Download

memory/580-6-0x0000000006090000-0x0000000006091000-memory.dmp

Download

memory/580-7-0x0000000006060000-0x0000000006062000-memory.dmp

Download

memory/580-8-0x0000000006380000-0x0000000006381000-memory.dmp

Download

memory/580-11-0x0000000005BE0000-0x0000000005BE2000-memory.dmp

Download

memory/584-48-0x0000000005730000-0x0000000005731000-memory.dmp

Download

memory/584-43-0x0000000073FC0000-0x00000000746AE000-memory.dmp

Download

memory/584-41-0x0000000000400000-0x0000000000452000-memory.dmp

Download

memory/584-47-0x0000000005630000-0x0000000005631000-memory.dmp

Download

memory/2276-30-0x0000000073F80000-0x000000007466E000-memory.dmp

Download

memory/2276-39-0x00000000053D0000-0x00000000053D5000-memory.dmp

Download

memory/3948-17-0x00000000075B0000-0x00000000075B1000-memory.dmp

Download

memory/3948-22-0x0000000007F20000-0x0000000007F21000-memory.dmp

Download

memory/3948-25-0x0000000008D40000-0x0000000008D41000-memory.dmp

Download

memory/3948-18-0x00000000077A0000-0x00000000077A1000-memory.dmp

Download

memory/3948-19-0x0000000007810000-0x0000000007811000-memory.dmp

Download

memory/3948-16-0x0000000006EC0000-0x0000000006EC1000-memory.dmp

Download

memory/3948-23-0x0000000008FB0000-0x0000000008FB1000-memory.dmp

Download

memory/3948-24-0x0000000008CF0000-0x0000000008CF1000-memory.dmp

Download

memory/3948-15-0x0000000006F10000-0x0000000006F11000-memory.dmp

Download

memory/3948-14-0x0000000004480000-0x0000000004481000-memory.dmp

Download

memory/3948-13-0x0000000073F80000-0x000000007466E000-memory.dmp

Download

memory/3948-21-0x0000000008220000-0x0000000008221000-memory.dmp

Download

memory/3948-20-0x0000000007590000-0x0000000007591000-memory.dmp

Download