agenttesla | b3d394b6cf7365519e9817ae52707443bba6d12a6054d1d6ca99012d6dafd014

General

Target

b3d394b6cf7365519e9817ae52707443bba6d12a6054d1d6ca99012d6dafd014.exe
Size

804KB
MD5

4122c9b31ec914b161c2dddcb92e06bd
SHA1

c973a177f213a01d5737eae7daf2f0a9598f7f92
SHA256

b3d394b6cf7365519e9817ae52707443bba6d12a6054d1d6ca99012d6dafd014
SHA512

74463d55e678707566112ff1598cd70da2bedb83dcc6945e8cce60c96157261f79c5bd0b9c3e711d7bd4cb14b64dcecb2655d93b27148a324ed7e0b69ec2549c
SSDEEP

12288:v6Wq4aaE6KwyF5L0Y2D1PqLqSwRGC3J5EBmptg39L2JGLa+RLlp7ApH3kRyMySj3:tthEVaPqLqlrjlg3p2JGLNx7qqN2O88

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\unrosed.vbs	unrosed.exe

Executes dropped EXE 1 IoCs

pid	Process
1672	unrosed.exe

Loads dropped DLL 1 IoCs

pid	Process
2368	b3d394b6cf7365519e9817ae52707443bba6d12a6054d1d6ca99012d6dafd014.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
4	ip-api.com

AutoIT Executable 3 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/memory/1672-12-0x0000000000400000-0x00000000004C2000-memory.dmp	autoit_exe
behavioral1/memory/2368-11-0x0000000000400000-0x00000000004C2000-memory.dmp	autoit_exe
behavioral1/memory/1672-25-0x0000000000400000-0x00000000004C2000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1672 set thread context of 2956	1672	unrosed.exe	31

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2368-0-0x0000000000400000-0x00000000004C2000-memory.dmp	upx
behavioral1/files/0x000700000001960a-5.dat	upx
behavioral1/memory/2368-7-0x00000000025F0000-0x00000000026B2000-memory.dmp	upx
behavioral1/memory/1672-12-0x0000000000400000-0x00000000004C2000-memory.dmp	upx
behavioral1/memory/2368-11-0x0000000000400000-0x00000000004C2000-memory.dmp	upx
behavioral1/memory/1672-25-0x0000000000400000-0x00000000004C2000-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	b3d394b6cf7365519e9817ae52707443bba6d12a6054d1d6ca99012d6dafd014.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	unrosed.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2956	RegSvcs.exe
2956	RegSvcs.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1672	unrosed.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2956	RegSvcs.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
2368	b3d394b6cf7365519e9817ae52707443bba6d12a6054d1d6ca99012d6dafd014.exe
2368	b3d394b6cf7365519e9817ae52707443bba6d12a6054d1d6ca99012d6dafd014.exe
1672	unrosed.exe
1672	unrosed.exe

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
2368	b3d394b6cf7365519e9817ae52707443bba6d12a6054d1d6ca99012d6dafd014.exe
2368	b3d394b6cf7365519e9817ae52707443bba6d12a6054d1d6ca99012d6dafd014.exe
1672	unrosed.exe
1672	unrosed.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2368 wrote to memory of 1672	2368	b3d394b6cf7365519e9817ae52707443bba6d12a6054d1d6ca99012d6dafd014.exe	30
PID 2368 wrote to memory of 1672	2368	b3d394b6cf7365519e9817ae52707443bba6d12a6054d1d6ca99012d6dafd014.exe	30
PID 2368 wrote to memory of 1672	2368	b3d394b6cf7365519e9817ae52707443bba6d12a6054d1d6ca99012d6dafd014.exe	30
PID 2368 wrote to memory of 1672	2368	b3d394b6cf7365519e9817ae52707443bba6d12a6054d1d6ca99012d6dafd014.exe	30
PID 1672 wrote to memory of 2956	1672	unrosed.exe	31
PID 1672 wrote to memory of 2956	1672	unrosed.exe	31
PID 1672 wrote to memory of 2956	1672	unrosed.exe	31
PID 1672 wrote to memory of 2956	1672	unrosed.exe	31
PID 1672 wrote to memory of 2956	1672	unrosed.exe	31
PID 1672 wrote to memory of 2956	1672	unrosed.exe	31
PID 1672 wrote to memory of 2956	1672	unrosed.exe	31
PID 1672 wrote to memory of 2956	1672	unrosed.exe	31

C:\Users\Admin\AppData\Local\Temp\b3d394b6cf7365519e9817ae52707443bba6d12a6054d1d6ca99012d6dafd014.exe
"C:\Users\Admin\AppData\Local\Temp\b3d394b6cf7365519e9817ae52707443bba6d12a6054d1d6ca99012d6dafd014.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2368
- C:\Users\Admin\AppData\Local\chordates\unrosed.exe
  "C:\Users\Admin\AppData\Local\Temp\b3d394b6cf7365519e9817ae52707443bba6d12a6054d1d6ca99012d6dafd014.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:1672
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "C:\Users\Admin\AppData\Local\Temp\b3d394b6cf7365519e9817ae52707443bba6d12a6054d1d6ca99012d6dafd014.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2956

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\Melber

Filesize
239KB

MD5
118e3a1a5f3a3549d390f3e2609408ea

SHA1
3ff93e439b8356eed8bd504f0b2d0a6bfedd5357

SHA256
768410a7487908dfbed1eac5a3faadafb8b2302baaf77153e6d0675f2e9a6749

SHA512
cd71fe266b43b9febd1036330ae1542db974a9a14ee35364cba1e356f1a7a35412f09f3ab438f8cc2230bf3e7c30e01a7017c17d85e5a5c65d33154900621deb

Download Submit
\Users\Admin\AppData\Local\chordates\unrosed.exe

Filesize
804KB

MD5
4122c9b31ec914b161c2dddcb92e06bd

SHA1
c973a177f213a01d5737eae7daf2f0a9598f7f92

SHA256
b3d394b6cf7365519e9817ae52707443bba6d12a6054d1d6ca99012d6dafd014

SHA512
74463d55e678707566112ff1598cd70da2bedb83dcc6945e8cce60c96157261f79c5bd0b9c3e711d7bd4cb14b64dcecb2655d93b27148a324ed7e0b69ec2549c

Download Submit
memory/1672-12-0x0000000000400000-0x00000000004C2000-memory.dmp

Filesize
776KB

Download
memory/1672-17-0x0000000002F70000-0x0000000003170000-memory.dmp

Filesize
2.0MB

Download
memory/1672-25-0x0000000000400000-0x00000000004C2000-memory.dmp

Filesize
776KB

Download
memory/2368-28-0x0000000003B70000-0x0000000003D70000-memory.dmp

Filesize
2.0MB

Download
memory/2368-3-0x0000000003B70000-0x0000000003D70000-memory.dmp

Filesize
2.0MB

Download
memory/2368-7-0x00000000025F0000-0x00000000026B2000-memory.dmp

Filesize
776KB

Download
memory/2368-11-0x0000000000400000-0x00000000004C2000-memory.dmp

Filesize
776KB

Download
memory/2368-0-0x0000000000400000-0x00000000004C2000-memory.dmp

Filesize
776KB

Download
memory/2956-19-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2956-21-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2956-26-0x0000000073D3E000-0x0000000073D3F000-memory.dmp

Filesize
4KB

Download
memory/2956-27-0x0000000073D30000-0x000000007441E000-memory.dmp

Filesize
6.9MB

Download
memory/2956-23-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2956-29-0x0000000073D3E000-0x0000000073D3F000-memory.dmp

Filesize
4KB

Download
memory/2956-30-0x0000000073D30000-0x000000007441E000-memory.dmp

Filesize
6.9MB

Download

Analysis

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