agenttesla | 4e1a7d2b797ea44a290abc5095dd8f8791fe14088d519449da4bc499a2ff1066

Analysis

max time kernel
132s
max time network
137s
platform
windows10_x64
resource
win10-en
submitted
14/09/2021, 04:25

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General

Target
pleas.exe
Size 457KB
Sample210914-e11blsegd4
SHA256 4e1a7d2b797ea44a290abc5095dd8f8791fe14088d519449da4bc499a2ff1066
MD5 4b5f4d60b70efd2f25ac724a5096a4c6
SHA1 f1491ccfddbe104abb09f963e6216d72605c5d8a
SHA512 624310319ba6ee1a2c58726d2e574eb9ad36ecb8f789cf04675b9f391b188883f62831d28f3498f32c78e247cff721ac1c55eff176653a592c428af4bf66d057
MD5 SHA1 SHA512

Score

10^/10

agenttesla keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol
smtp
Host
mail.upgcambodia.com
Port
587
Username
[email protected]
Password
stock3168

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/3800-126-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral2/memory/3800-127-0x000000000043762E-mapping.dmp	family_agenttesla

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	RegSvcs.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-1-5-21-2559286294-2439613352-4032193287-1000\Software\Microsoft\Windows\CurrentVersion\Run\NXLun = "C:\\Users\\Admin\\AppData\\Roaming\\NXLun\\NXLun.exe"	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3992 set thread context of 3800	3992	pleas.exe	69

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3992	pleas.exe
3992	pleas.exe
3800	RegSvcs.exe
3800	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3992	pleas.exe
Token: SeDebugPrivilege	3800	RegSvcs.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3992 wrote to memory of 3800	3992	pleas.exe	69
PID 3992 wrote to memory of 3800	3992	pleas.exe	69
PID 3992 wrote to memory of 3800	3992	pleas.exe	69
PID 3992 wrote to memory of 3800	3992	pleas.exe	69
PID 3992 wrote to memory of 3800	3992	pleas.exe	69
PID 3992 wrote to memory of 3800	3992	pleas.exe	69
PID 3992 wrote to memory of 3800	3992	pleas.exe	69
PID 3992 wrote to memory of 3800	3992	pleas.exe	69

C:\Users\Admin\AppData\Local\Temp\pleas.exe
"C:\Users\Admin\AppData\Local\Temp\pleas.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3992
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
  2⤵
  - Drops file in Drivers directory
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3800

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/3800-126-0x0000000000400000-0x000000000043C000-memory.dmp

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memory/3800-134-0x0000000005AF0000-0x0000000005AF1000-memory.dmp

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memory/3800-133-0x0000000005360000-0x0000000005361000-memory.dmp

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memory/3800-132-0x0000000004DC0000-0x0000000004DC1000-memory.dmp

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memory/3992-122-0x00000000089A0000-0x00000000089A1000-memory.dmp

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memory/3992-115-0x0000000000570000-0x0000000000571000-memory.dmp

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memory/3992-123-0x00000000052F0000-0x00000000052F7000-memory.dmp

Download

memory/3992-124-0x0000000008DD0000-0x0000000008E35000-memory.dmp

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memory/3992-125-0x000000000B5D0000-0x000000000B60C000-memory.dmp

Download

memory/3992-121-0x00000000051B0000-0x00000000051B1000-memory.dmp

Download

memory/3992-120-0x0000000004E10000-0x000000000530E000-memory.dmp

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memory/3992-119-0x0000000005810000-0x0000000005811000-memory.dmp

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memory/3992-118-0x0000000004EB0000-0x0000000004EB1000-memory.dmp

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memory/3992-117-0x0000000005310000-0x0000000005311000-memory.dmp

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