agenttesla | 35931dde3f9e60ae4cbf22e5348bc4afca8d6145137a27a25216edba8b66f68e

General

Target

35931dde3f9e60ae4cbf22e5348bc4afca8d6145137a27a25216edba8b66f68e.exe
Size

559KB
MD5

db18c7473665c8c3c28abef8107ac4e8
SHA1

ac8826df8832d3cf3825d1523f5d605c9ff22ea6
SHA256

35931dde3f9e60ae4cbf22e5348bc4afca8d6145137a27a25216edba8b66f68e
SHA512

a44f2dec7dec52ed499c7a05dee8960c390a168f82531d13371f45d0e6185fe9e6c99fb384e827b9d087756109c6bb0d2697d2b097e0bfdb193a064e0022b8d0
SSDEEP

12288:B9BvctM85t35JPNJj2WzoRLQYRYzmYhnc9skqXatMdJ8s8:BD0tM85tbNJjldeYiYhncGZqtoJ89

Score

10^/10

agenttesla discovery keylogger spyware stealer trojan upx

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: ftp
Host:
ftp://ftp.antoniomayol.com:21
Port:
21
Username:
[email protected]
Password:
cMhKDQUk1{;%

Signatures

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

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\reindulgence.vbs	reindulgence.exe

Executes dropped EXE 1 IoCs

pid	Process
1888	reindulgence.exe

Looks up external IP address via web service 1 IoCs

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

flow	ioc
14	ip-api.com

AutoIT Executable 2 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/3148-12-0x0000000000400000-0x00000000004E5000-memory.dmp	autoit_exe
behavioral2/memory/1888-22-0x0000000000400000-0x00000000004E5000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1888 set thread context of 4104	1888	reindulgence.exe	84

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/3148-0-0x0000000000400000-0x00000000004E5000-memory.dmp	upx
behavioral2/files/0x0007000000023c93-9.dat	upx
behavioral2/memory/3148-12-0x0000000000400000-0x00000000004E5000-memory.dmp	upx
behavioral2/memory/1888-22-0x0000000000400000-0x00000000004E5000-memory.dmp	upx

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 3 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	35931dde3f9e60ae4cbf22e5348bc4afca8d6145137a27a25216edba8b66f68e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reindulgence.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4104	RegSvcs.exe
4104	RegSvcs.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1888	reindulgence.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4104	RegSvcs.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
3148	35931dde3f9e60ae4cbf22e5348bc4afca8d6145137a27a25216edba8b66f68e.exe
3148	35931dde3f9e60ae4cbf22e5348bc4afca8d6145137a27a25216edba8b66f68e.exe
1888	reindulgence.exe
1888	reindulgence.exe

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
3148	35931dde3f9e60ae4cbf22e5348bc4afca8d6145137a27a25216edba8b66f68e.exe
3148	35931dde3f9e60ae4cbf22e5348bc4afca8d6145137a27a25216edba8b66f68e.exe
1888	reindulgence.exe
1888	reindulgence.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3148 wrote to memory of 1888	3148	35931dde3f9e60ae4cbf22e5348bc4afca8d6145137a27a25216edba8b66f68e.exe	83
PID 3148 wrote to memory of 1888	3148	35931dde3f9e60ae4cbf22e5348bc4afca8d6145137a27a25216edba8b66f68e.exe	83
PID 3148 wrote to memory of 1888	3148	35931dde3f9e60ae4cbf22e5348bc4afca8d6145137a27a25216edba8b66f68e.exe	83
PID 1888 wrote to memory of 4104	1888	reindulgence.exe	84
PID 1888 wrote to memory of 4104	1888	reindulgence.exe	84
PID 1888 wrote to memory of 4104	1888	reindulgence.exe	84
PID 1888 wrote to memory of 4104	1888	reindulgence.exe	84

C:\Users\Admin\AppData\Local\Temp\35931dde3f9e60ae4cbf22e5348bc4afca8d6145137a27a25216edba8b66f68e.exe
"C:\Users\Admin\AppData\Local\Temp\35931dde3f9e60ae4cbf22e5348bc4afca8d6145137a27a25216edba8b66f68e.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:3148
- C:\Users\Admin\AppData\Local\lecheries\reindulgence.exe
  "C:\Users\Admin\AppData\Local\Temp\35931dde3f9e60ae4cbf22e5348bc4afca8d6145137a27a25216edba8b66f68e.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:1888
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "C:\Users\Admin\AppData\Local\Temp\35931dde3f9e60ae4cbf22e5348bc4afca8d6145137a27a25216edba8b66f68e.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4104

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\springmaker

Filesize
239KB

MD5
e8d41fa1c1d78ea2a2aa75688a23fa11

SHA1
8d271f7175b3f367873ab61c9d1ada6449c01c3e

SHA256
33d698a0f363f220a366eb5fe84d5d708b1407928a795dcf10075fa8c6396b9b

SHA512
78b094b428c42125ab75240febe82788df523aed48fabd51c0c8e9e0513ed4b4ab858fa59c8051b6e7da23d088abc5c7675925f4db2fbe7940bdd3992761e93c

Download Submit
C:\Users\Admin\AppData\Local\lecheries\reindulgence.exe

Filesize
559KB

MD5
db18c7473665c8c3c28abef8107ac4e8

SHA1
ac8826df8832d3cf3825d1523f5d605c9ff22ea6

SHA256
35931dde3f9e60ae4cbf22e5348bc4afca8d6145137a27a25216edba8b66f68e

SHA512
a44f2dec7dec52ed499c7a05dee8960c390a168f82531d13371f45d0e6185fe9e6c99fb384e827b9d087756109c6bb0d2697d2b097e0bfdb193a064e0022b8d0

Download Submit
memory/1888-22-0x0000000000400000-0x00000000004E5000-memory.dmp

Filesize
916KB

Download
memory/3148-6-0x0000000004090000-0x0000000004094000-memory.dmp

Filesize
16KB

Download
memory/3148-12-0x0000000000400000-0x00000000004E5000-memory.dmp

Filesize
916KB

Download
memory/3148-0-0x0000000000400000-0x00000000004E5000-memory.dmp

Filesize
916KB

Download
memory/4104-24-0x0000000005970000-0x0000000005F14000-memory.dmp

Filesize
5.6MB

Download
memory/4104-23-0x000000007508E000-0x000000007508F000-memory.dmp

Filesize
4KB

Download
memory/4104-20-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/4104-25-0x00000000055A0000-0x0000000005606000-memory.dmp

Filesize
408KB

Download
memory/4104-26-0x0000000075080000-0x0000000075830000-memory.dmp

Filesize
7.7MB

Download
memory/4104-27-0x00000000067F0000-0x0000000006840000-memory.dmp

Filesize
320KB

Download
memory/4104-28-0x00000000068E0000-0x0000000006972000-memory.dmp

Filesize
584KB

Download
memory/4104-29-0x0000000006880000-0x000000000688A000-memory.dmp

Filesize
40KB

Download
memory/4104-30-0x000000007508E000-0x000000007508F000-memory.dmp

Filesize
4KB

Download
memory/4104-31-0x0000000075080000-0x0000000075830000-memory.dmp

Filesize
7.7MB

Download

Analysis

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