agenttesla | 8ffd510513cafe4d5b4812ef693f06dcff7dc4097cccacd1be4ca0d308f3494d

Analysis

max time kernel
149s
max time network
90s
platform
windows10_x64
resource
win10v20201028
submitted
23/03/2021, 06:26

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General

Target
BL.exe
Size 1.1MB
Sample210323-33fvqbmd5a
SHA256 8ffd510513cafe4d5b4812ef693f06dcff7dc4097cccacd1be4ca0d308f3494d
MD5 728edaa7792ce1729269bcfc6470160b
SHA1 25fa4da65dc102419adfc25dfa58981ebf935ebb
SHA512 620c2f0598d786d42cca798631645d87c5b58d4f4193ce2475c542f902bb9cc8a35db4b34688219721111ac8d880122bdfb6622cf2580ff98d2faccd3f9390b7
MD5 SHA1 SHA512

Score

10^/10

agenttesla keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol
smtp
Host
us2.smtp.mailhostbox.com
Port
587
Username
[email protected]
Password
project2021blessinggoodgood2222

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/3088-13-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral2/memory/3088-14-0x000000000043765E-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-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run\AvrzbM = "C:\\Users\\Admin\\AppData\\Roaming\\AvrzbM\\AvrzbM.exe"	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4692 set thread context of 3088	4692	BL.exe	79

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
4692	BL.exe
4692	BL.exe
4692	BL.exe
3088	RegSvcs.exe
3088	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4692	BL.exe
Token: SeDebugPrivilege	3088	RegSvcs.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4692 wrote to memory of 3256	4692	BL.exe	78
PID 4692 wrote to memory of 3256	4692	BL.exe	78
PID 4692 wrote to memory of 3256	4692	BL.exe	78
PID 4692 wrote to memory of 3088	4692	BL.exe	79
PID 4692 wrote to memory of 3088	4692	BL.exe	79
PID 4692 wrote to memory of 3088	4692	BL.exe	79
PID 4692 wrote to memory of 3088	4692	BL.exe	79
PID 4692 wrote to memory of 3088	4692	BL.exe	79
PID 4692 wrote to memory of 3088	4692	BL.exe	79
PID 4692 wrote to memory of 3088	4692	BL.exe	79
PID 4692 wrote to memory of 3088	4692	BL.exe	79

C:\Users\Admin\AppData\Local\Temp\BL.exe
"C:\Users\Admin\AppData\Local\Temp\BL.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4692
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
  2⤵
  PID:3256
- 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:3088

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/3088-13-0x0000000000400000-0x000000000043C000-memory.dmp

Download

memory/3088-22-0x00000000062B0000-0x00000000062B1000-memory.dmp

Download

memory/3088-21-0x0000000005B30000-0x0000000005B31000-memory.dmp

Download

memory/3088-20-0x0000000005740000-0x0000000005741000-memory.dmp

Download

memory/3088-15-0x0000000073430000-0x0000000073B1E000-memory.dmp

Download

memory/4692-7-0x0000000005970000-0x0000000005971000-memory.dmp

Download

memory/4692-10-0x00000000082B0000-0x00000000082B1000-memory.dmp

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memory/4692-11-0x0000000005670000-0x000000000567B000-memory.dmp

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memory/4692-12-0x00000000086C0000-0x0000000008758000-memory.dmp

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memory/4692-9-0x0000000005650000-0x0000000005651000-memory.dmp

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memory/4692-8-0x00000000055E0000-0x00000000055E1000-memory.dmp

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memory/4692-2-0x0000000073430000-0x0000000073B1E000-memory.dmp

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memory/4692-6-0x00000000056A0000-0x00000000056A1000-memory.dmp

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memory/4692-5-0x0000000005B00000-0x0000000005B01000-memory.dmp

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memory/4692-3-0x0000000000CB0000-0x0000000000CB1000-memory.dmp

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