agenttesla | 75b5a3352b14a3d4a5dcbf496a997507edd6d5fdd641fdd37747f21ec6ae7efd

Analysis

max time kernel
124s
max time network
112s
platform
windows10_x64
resource
win10v20210410
submitted
19/04/2021, 06:57

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General

Target
Proforma Invoice.exe
Size 673KB
Sample210419-jttqa862x6
SHA256 75b5a3352b14a3d4a5dcbf496a997507edd6d5fdd641fdd37747f21ec6ae7efd
MD5 b1996ce7fe4ba0cfda8796343f8a5b0f
SHA1 0806e4664dc3cf5f1ff3fdac131dfff92e09b830
SHA512 33c846d73fc0e05d5bbff1cd1d7e243ea27305bb26e81e7115c9e9276440bbdbdb6761b355234e9d6900f9d7d9dc56ef185d58e44dfea8af9cf1cce6a54b4540
MD5 SHA1 SHA512

Score

10^/10

agenttesla keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol
smtp
Host
mail.bzuriyeh.com
Port
587
Username
[email protected]
Password
fk1475369MUM?

Signatures

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

AgentTesla Payload 4 IoCs

resource	yara_rule
behavioral2/memory/2100-127-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral2/memory/2100-128-0x000000000043762E-mapping.dmp	family_agenttesla
behavioral2/memory/2100-133-0x0000000005230000-0x000000000572E000-memory.dmp	family_agenttesla
behavioral2/memory/2100-138-0x0000000005230000-0x000000000572E000-memory.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-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\kprUEGC = "C:\\Users\\Admin\\AppData\\Roaming\\kprUEGC\\kprUEGC.exe"	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2208 set thread context of 2100	2208	Proforma Invoice.exe	82

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
2720	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2208	Proforma Invoice.exe
2208	Proforma Invoice.exe
2208	Proforma Invoice.exe
2100	RegSvcs.exe
2100	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2208	Proforma Invoice.exe
Token: SeDebugPrivilege	2100	RegSvcs.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2100	RegSvcs.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2208 wrote to memory of 2720	2208	Proforma Invoice.exe	79
PID 2208 wrote to memory of 2720	2208	Proforma Invoice.exe	79
PID 2208 wrote to memory of 2720	2208	Proforma Invoice.exe	79
PID 2208 wrote to memory of 3516	2208	Proforma Invoice.exe	81
PID 2208 wrote to memory of 3516	2208	Proforma Invoice.exe	81
PID 2208 wrote to memory of 3516	2208	Proforma Invoice.exe	81
PID 2208 wrote to memory of 2100	2208	Proforma Invoice.exe	82
PID 2208 wrote to memory of 2100	2208	Proforma Invoice.exe	82
PID 2208 wrote to memory of 2100	2208	Proforma Invoice.exe	82
PID 2208 wrote to memory of 2100	2208	Proforma Invoice.exe	82
PID 2208 wrote to memory of 2100	2208	Proforma Invoice.exe	82
PID 2208 wrote to memory of 2100	2208	Proforma Invoice.exe	82
PID 2208 wrote to memory of 2100	2208	Proforma Invoice.exe	82
PID 2208 wrote to memory of 2100	2208	Proforma Invoice.exe	82

C:\Users\Admin\AppData\Local\Temp\Proforma Invoice.exe
"C:\Users\Admin\AppData\Local\Temp\Proforma Invoice.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2208
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\DyZrxifRm" /XML "C:\Users\Admin\AppData\Local\Temp\tmp91E5.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:2720
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "{path}"
  2⤵
  PID:3516
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "{path}"
  2⤵
  - Drops file in Drivers directory
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2100

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

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2100-138-0x0000000005230000-0x000000000572E000-memory.dmp

Download

memory/2100-135-0x0000000005EA0000-0x0000000005EA1000-memory.dmp

Download

memory/2100-134-0x0000000005710000-0x0000000005711000-memory.dmp

Download

memory/2100-133-0x0000000005230000-0x000000000572E000-memory.dmp

Download

memory/2100-127-0x0000000000400000-0x000000000043C000-memory.dmp

Download

memory/2208-119-0x0000000007CC0000-0x0000000007CC1000-memory.dmp

Download

memory/2208-123-0x0000000007FC0000-0x0000000008071000-memory.dmp

Download

memory/2208-124-0x000000000A560000-0x000000000A5D8000-memory.dmp

Download

memory/2208-122-0x000000007EAC0000-0x000000007EAC1000-memory.dmp

Download

memory/2208-120-0x0000000005A30000-0x0000000005F2E000-memory.dmp

Download

memory/2208-121-0x0000000005F00000-0x0000000005F05000-memory.dmp

Download

memory/2208-114-0x0000000000FA0000-0x0000000000FA1000-memory.dmp

Download

memory/2208-118-0x0000000005870000-0x0000000005871000-memory.dmp

Download

memory/2208-117-0x0000000005910000-0x0000000005911000-memory.dmp

Download

memory/2208-116-0x0000000005F30000-0x0000000005F31000-memory.dmp

Download