agenttesla | ea86beebc5237d00ee6fd3cffbbb07e0e625da940cc056e07ff26b9f47ed9a5f

Analysis

max time kernel
133s
max time network
15s
platform
windows7_x64
resource
win7v20210408
submitted
07/05/2021, 13:35

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General

Target
RFQ11054.pdf.exe
Size 679KB
Sample210507-kfl53ptr56
SHA256 ea86beebc5237d00ee6fd3cffbbb07e0e625da940cc056e07ff26b9f47ed9a5f
MD5 9b32e1fecfdeb8f1dced2e6376288751
SHA1 74ef944becea9c2e7c452bae43d4714fe1024600
SHA512 ceb065e8815d158f6ce3f61d69a9b79f21053bd14304f7c444dd840fffee85a2a304acba986a8a1726384241eaceb6f7f3691f89743907f9252b5deaa7deaaff
MD5 SHA1 SHA512

Score

10^/10

agenttesla evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol
smtp
Host
mail.saudimedlabexpo.com
Port
587
Username
[email protected]
Password
]dTqP-]^T]Pt

Signatures

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

AgentTesla Payload 3 IoCs

resource	yara_rule
behavioral1/memory/1196-83-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/1196-84-0x00000000004375BE-mapping.dmp	family_agenttesla
behavioral1/memory/1196-86-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla

Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	RFQ11054.pdf.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	RFQ11054.pdf.exe

Adds Run key 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-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run\pGKuRU = "C:\\Users\\Admin\\AppData\\Roaming\\pGKuRU\\pGKuRU.exe"	RFQ11054.pdf.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	RFQ11054.pdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	RFQ11054.pdf.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 736 set thread context of 1196	736	RFQ11054.pdf.exe	41

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

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
2024	schtasks.exe

Suspicious behavior: EnumeratesProcesses 15 IoCs

pid	Process
1440	powershell.exe
1072	powershell.exe
736	RFQ11054.pdf.exe
736	RFQ11054.pdf.exe
736	RFQ11054.pdf.exe
736	RFQ11054.pdf.exe
736	RFQ11054.pdf.exe
736	RFQ11054.pdf.exe
736	RFQ11054.pdf.exe
1196	RFQ11054.pdf.exe
1196	RFQ11054.pdf.exe
1644	powershell.exe
1440	powershell.exe
1072	powershell.exe
1644	powershell.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	1440	powershell.exe
Token: SeDebugPrivilege	1072	powershell.exe
Token: SeDebugPrivilege	736	RFQ11054.pdf.exe
Token: SeDebugPrivilege	1196	RFQ11054.pdf.exe
Token: SeDebugPrivilege	1644	powershell.exe

Suspicious use of WriteProcessMemory 37 IoCs

description	pid	Process	procid_target
PID 736 wrote to memory of 1440	736	RFQ11054.pdf.exe	29
PID 736 wrote to memory of 1440	736	RFQ11054.pdf.exe	29
PID 736 wrote to memory of 1440	736	RFQ11054.pdf.exe	29
PID 736 wrote to memory of 1440	736	RFQ11054.pdf.exe	29
PID 736 wrote to memory of 1072	736	RFQ11054.pdf.exe	32
PID 736 wrote to memory of 1072	736	RFQ11054.pdf.exe	32
PID 736 wrote to memory of 1072	736	RFQ11054.pdf.exe	32
PID 736 wrote to memory of 1072	736	RFQ11054.pdf.exe	32
PID 736 wrote to memory of 2024	736	RFQ11054.pdf.exe	34
PID 736 wrote to memory of 2024	736	RFQ11054.pdf.exe	34
PID 736 wrote to memory of 2024	736	RFQ11054.pdf.exe	34
PID 736 wrote to memory of 2024	736	RFQ11054.pdf.exe	34
PID 736 wrote to memory of 1644	736	RFQ11054.pdf.exe	36
PID 736 wrote to memory of 1644	736	RFQ11054.pdf.exe	36
PID 736 wrote to memory of 1644	736	RFQ11054.pdf.exe	36
PID 736 wrote to memory of 1644	736	RFQ11054.pdf.exe	36
PID 736 wrote to memory of 1272	736	RFQ11054.pdf.exe	38
PID 736 wrote to memory of 1272	736	RFQ11054.pdf.exe	38
PID 736 wrote to memory of 1272	736	RFQ11054.pdf.exe	38
PID 736 wrote to memory of 1272	736	RFQ11054.pdf.exe	38
PID 736 wrote to memory of 2020	736	RFQ11054.pdf.exe	39
PID 736 wrote to memory of 2020	736	RFQ11054.pdf.exe	39
PID 736 wrote to memory of 2020	736	RFQ11054.pdf.exe	39
PID 736 wrote to memory of 2020	736	RFQ11054.pdf.exe	39
PID 736 wrote to memory of 1916	736	RFQ11054.pdf.exe	40
PID 736 wrote to memory of 1916	736	RFQ11054.pdf.exe	40
PID 736 wrote to memory of 1916	736	RFQ11054.pdf.exe	40
PID 736 wrote to memory of 1916	736	RFQ11054.pdf.exe	40
PID 736 wrote to memory of 1196	736	RFQ11054.pdf.exe	41
PID 736 wrote to memory of 1196	736	RFQ11054.pdf.exe	41
PID 736 wrote to memory of 1196	736	RFQ11054.pdf.exe	41
PID 736 wrote to memory of 1196	736	RFQ11054.pdf.exe	41
PID 736 wrote to memory of 1196	736	RFQ11054.pdf.exe	41
PID 736 wrote to memory of 1196	736	RFQ11054.pdf.exe	41
PID 736 wrote to memory of 1196	736	RFQ11054.pdf.exe	41
PID 736 wrote to memory of 1196	736	RFQ11054.pdf.exe	41
PID 736 wrote to memory of 1196	736	RFQ11054.pdf.exe	41

C:\Users\Admin\AppData\Local\Temp\RFQ11054.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\RFQ11054.pdf.exe"
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:736
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\RFQ11054.pdf.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1440
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\geFvfxQBeF.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1072
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\geFvfxQBeF" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2858.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:2024
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\geFvfxQBeF.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1644
- C:\Users\Admin\AppData\Local\Temp\RFQ11054.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\RFQ11054.pdf.exe"
  2⤵
  PID:1272
- C:\Users\Admin\AppData\Local\Temp\RFQ11054.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\RFQ11054.pdf.exe"
  2⤵
  PID:2020
- C:\Users\Admin\AppData\Local\Temp\RFQ11054.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\RFQ11054.pdf.exe"
  2⤵
  PID:1916
- C:\Users\Admin\AppData\Local\Temp\RFQ11054.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\RFQ11054.pdf.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1196

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/736-62-0x0000000004BB0000-0x0000000004BB1000-memory.dmp

Download

memory/736-63-0x0000000000310000-0x000000000031E000-memory.dmp

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memory/736-64-0x0000000005050000-0x00000000050EA000-memory.dmp

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memory/736-65-0x0000000000D20000-0x0000000000D80000-memory.dmp

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memory/736-60-0x00000000012D0000-0x00000000012D1000-memory.dmp

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memory/1072-80-0x0000000002290000-0x0000000002EDA000-memory.dmp

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memory/1072-79-0x0000000002290000-0x0000000002EDA000-memory.dmp

Download

memory/1196-83-0x0000000000400000-0x000000000043C000-memory.dmp

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memory/1196-86-0x0000000000400000-0x000000000043C000-memory.dmp

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memory/1196-92-0x0000000000380000-0x0000000000381000-memory.dmp

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memory/1440-69-0x0000000004880000-0x0000000004881000-memory.dmp

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memory/1440-68-0x0000000000DD0000-0x0000000000DD1000-memory.dmp

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memory/1440-88-0x0000000002610000-0x0000000002611000-memory.dmp

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memory/1440-96-0x0000000005290000-0x0000000005291000-memory.dmp

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memory/1440-77-0x0000000004840000-0x0000000004841000-memory.dmp

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memory/1440-78-0x0000000004842000-0x0000000004843000-memory.dmp

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memory/1440-67-0x0000000075891000-0x0000000075893000-memory.dmp

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memory/1644-137-0x0000000006440000-0x0000000006441000-memory.dmp

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memory/1644-138-0x0000000006450000-0x0000000006451000-memory.dmp

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memory/1644-106-0x00000000057F0000-0x00000000057F1000-memory.dmp

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memory/1644-101-0x0000000005790000-0x0000000005791000-memory.dmp

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memory/1644-122-0x0000000005750000-0x0000000005751000-memory.dmp

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memory/1644-107-0x0000000006290000-0x0000000006291000-memory.dmp

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memory/1644-111-0x000000007EF30000-0x000000007EF31000-memory.dmp

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memory/1644-95-0x0000000002290000-0x0000000002EDA000-memory.dmp

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memory/1644-93-0x0000000002290000-0x0000000002EDA000-memory.dmp

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memory/1644-115-0x00000000063C0000-0x00000000063C1000-memory.dmp

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