agenttesla | 908bd3cae1a5660edb6221b5fd0e82a6635bd879c232ac2989368422a06f599a

General

Target

MACHINE QUOTATION/tedutil.dll
Size

14.1MB
MD5

f5d36baa964bd1f219483fbd39013d97
SHA1

09d2ba088ce0982a09f59615cd4622ff83055a8d
SHA256

290a36d8428ef6694919b9aeb575003cb1ed58a80b716bb270a578b37ff15926
SHA512

993696e0f0f41aae0c171b09065f997a010583d90cef439e836811bd546a5a412043d67059d9c5dec635bfb6d1e6af7b748f076481600b21b253342a6a985248
SSDEEP

196608:R4ySSA0Y+7qPljTEp6vrO3KKJdEh0G1GPB1xbVr6H:KySSA0P7qPlC6Ph3I51nW

Score

10^/10

agenttesla discovery keylogger persistence spyware stealer trojan

Malware Config

Extracted

Credentials

Protocol: ftp
Host:
ftp.ercolina-usa.com
Port:
21
Username:
[email protected]
Password:
nXe0M~WkW&nJ

Extracted

Family

agenttesla

Credentials

Protocol: ftp
Host:
ftp://ftp.ercolina-usa.com
Port:
21
Username:
[email protected]
Password:
nXe0M~WkW&nJ

Signatures

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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\newapp = "C:\\Users\\Admin\\AppData\\Roaming\\newapp\\newapp.exe"	AddInProcess32.exe

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
12	api.ipify.org
13	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4928 set thread context of 4164	4928	regsvr32.exe	83

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AddInProcess32.exe

Kills process with taskkill 1 IoCs

defense_evasion

pid	Process
1748	taskkill.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4928	regsvr32.exe
4164	AddInProcess32.exe
4164	AddInProcess32.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4928	regsvr32.exe
Token: SeDebugPrivilege	4164	AddInProcess32.exe
Token: SeDebugPrivilege	1748	taskkill.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4164	AddInProcess32.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4928 wrote to memory of 424	4928	regsvr32.exe	82
PID 4928 wrote to memory of 424	4928	regsvr32.exe	82
PID 4928 wrote to memory of 4164	4928	regsvr32.exe	83
PID 4928 wrote to memory of 4164	4928	regsvr32.exe	83
PID 4928 wrote to memory of 4164	4928	regsvr32.exe	83
PID 4928 wrote to memory of 4164	4928	regsvr32.exe	83
PID 4928 wrote to memory of 4164	4928	regsvr32.exe	83
PID 4928 wrote to memory of 4164	4928	regsvr32.exe	83
PID 4928 wrote to memory of 4164	4928	regsvr32.exe	83
PID 4928 wrote to memory of 4164	4928	regsvr32.exe	83
PID 1876 wrote to memory of 3660	1876	cmd.exe	88
PID 1876 wrote to memory of 3660	1876	cmd.exe	88

C:\Windows\system32\regsvr32.exe
regsvr32 /s "C:\Users\Admin\AppData\Local\Temp\MACHINE QUOTATION\tedutil.dll"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4928
- \??\c:\windows\system32\cmstp.exe
  "c:\windows\system32\cmstp.exe" /au C:\windows\temp\1173636944.inf
  2⤵
  PID:424
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:4164

C:\Windows\system32\cmd.exe
cmd.exe /C start /D C:\Windows\system32 regsvr32.exe
1⤵
- Suspicious use of WriteProcessMemory
PID:1876
- C:\Windows\system32\regsvr32.exe
  regsvr32.exe
  2⤵
  PID:3660

C:\Windows\system32\taskkill.exe
taskkill /IM cmstp.exe /F
1⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1748

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\windows\temp\1173636944.inf

Filesize
588B

MD5
bb9811ebc094caf05f17d224e1d4bcef

SHA1
88a70fdbcd897578fbb603c7effedeb8f682f927

SHA256
cb13e6484911a383bc11bc3740630ab41e54e52ffb3a7b6c716a80fce23c7b5c

SHA512
7a049f5e30fdac69753dff8531b830cb22d5e5b91c5a039981f4fdb2df91ea4baf6628ad0cb3a29539096a31210b5e955dc81f0085c6ec75f143308da5ff01dc

Download Submit
memory/4164-2-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/4164-3-0x000000007510E000-0x000000007510F000-memory.dmp

Filesize
4KB

Download
memory/4164-4-0x0000000005410000-0x00000000059B4000-memory.dmp

Filesize
5.6MB

Download
memory/4164-5-0x0000000004F60000-0x0000000004FC6000-memory.dmp

Filesize
408KB

Download
memory/4164-6-0x0000000075100000-0x00000000758B0000-memory.dmp

Filesize
7.7MB

Download
memory/4164-9-0x0000000006290000-0x00000000062E0000-memory.dmp

Filesize
320KB

Download
memory/4164-10-0x0000000006400000-0x0000000006492000-memory.dmp

Filesize
584KB

Download
memory/4164-11-0x00000000063A0000-0x00000000063AA000-memory.dmp

Filesize
40KB

Download
memory/4164-12-0x000000007510E000-0x000000007510F000-memory.dmp

Filesize
4KB

Download
memory/4164-13-0x0000000075100000-0x00000000758B0000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads