agenttesla | 88d86232f29100795de49ec32dcfcd35ab34d6b7e1b1a61ecf33c4dc56e60a71

General

Target

9b3c208aa85512eec82a737a073965e8.exe
Size

700KB
MD5

9b3c208aa85512eec82a737a073965e8
SHA1

7e548d758f5041e07007b9f2ca735de675d68686
SHA256

88d86232f29100795de49ec32dcfcd35ab34d6b7e1b1a61ecf33c4dc56e60a71
SHA512

0acfc3312c61d354163999087d6c2e754cc2c48fcce331283adcb73eaf6a30b353a559fcb1770e96bfc667401b5e9df7cf5a681db7f2cf315f0eb47fa07c800e
SSDEEP

12288:XT/rmFskovjlnpLJBUt9oMbBBDNnrkaCRUgU6gZaPTXVL:XTD3TL8t1hFMUHMPJL

Score

10^/10

agenttesla guloader discovery downloader keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: ftp
Host:
ftp://ftp.concaribe.com
Port:
21
Username:
[email protected]
Password:
ro}UWgz#!38E

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
Agenttesla family
agenttesla
Guloader family
guloader
Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader

Loads dropped DLL 2 IoCs

pid	Process
5012	9b3c208aa85512eec82a737a073965e8.exe
5012	9b3c208aa85512eec82a737a073965e8.exe

Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
spyware stealer

Data from Local System
T1005

Credentials in Registry
T1552.002
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

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
22	api.ipify.org
23	api.ipify.org

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
4908	9b3c208aa85512eec82a737a073965e8.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
5012	9b3c208aa85512eec82a737a073965e8.exe
4908	9b3c208aa85512eec82a737a073965e8.exe

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 2 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	9b3c208aa85512eec82a737a073965e8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	9b3c208aa85512eec82a737a073965e8.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4908	9b3c208aa85512eec82a737a073965e8.exe
4908	9b3c208aa85512eec82a737a073965e8.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
5012	9b3c208aa85512eec82a737a073965e8.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4908	9b3c208aa85512eec82a737a073965e8.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 5012 wrote to memory of 4908	5012	9b3c208aa85512eec82a737a073965e8.exe	94
PID 5012 wrote to memory of 4908	5012	9b3c208aa85512eec82a737a073965e8.exe	94
PID 5012 wrote to memory of 4908	5012	9b3c208aa85512eec82a737a073965e8.exe	94
PID 5012 wrote to memory of 4908	5012	9b3c208aa85512eec82a737a073965e8.exe	94

C:\Users\Admin\AppData\Local\Temp\9b3c208aa85512eec82a737a073965e8.exe
"C:\Users\Admin\AppData\Local\Temp\9b3c208aa85512eec82a737a073965e8.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:5012
- C:\Users\Admin\AppData\Local\Temp\9b3c208aa85512eec82a737a073965e8.exe
  "C:\Users\Admin\AppData\Local\Temp\9b3c208aa85512eec82a737a073965e8.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4908

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

4

T1552

Credentials In Files

3

T1552.001

Credentials in Registry

1

T1552.002

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

4

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsl953C.tmp\System.dll

Filesize
12KB

MD5
6e55a6e7c3fdbd244042eb15cb1ec739

SHA1
070ea80e2192abc42f358d47b276990b5fa285a9

SHA256
acf90ab6f4edc687e94aaf604d05e16e6cfb5e35873783b50c66f307a35c6506

SHA512
2d504b74da38edc967e3859733a2a9cacd885db82f0ca69bfb66872e882707314c54238344d45945dc98bae85772aceef71a741787922d640627d3c8ae8f1c35

Download Submit
C:\Users\Admin\Videos\rabbinat.ini

Filesize
37B

MD5
77e7b939ca90bd56fb6529cbd19b48da

SHA1
e04ee49434533f402a9efb1d1d1e2fb9458cd30d

SHA256
cffef7c1122622b6796879840f785add873f776a8f4d8734d29539f87ec1467a

SHA512
470323b1b5557043c62210a9f5af582438984d61cc4cad5bca20135938678a96f90934ad8fa2ad2539cf8a87cb62c1da2df6312c6952c78c793397dffbc6b34b

Download Submit
memory/4908-30-0x0000000076EA1000-0x0000000076FC1000-memory.dmp

Filesize
1.1MB

Download
memory/4908-33-0x0000000000490000-0x00000000004D2000-memory.dmp

Filesize
264KB

Download
memory/4908-42-0x00000000720E0000-0x0000000072890000-memory.dmp

Filesize
7.7MB

Download
memory/4908-26-0x00000000016F0000-0x0000000006744000-memory.dmp

Filesize
80.3MB

Download
memory/4908-27-0x0000000076F28000-0x0000000076F29000-memory.dmp

Filesize
4KB

Download
memory/4908-28-0x0000000076F45000-0x0000000076F46000-memory.dmp

Filesize
4KB

Download
memory/4908-29-0x0000000000490000-0x00000000016E4000-memory.dmp

Filesize
18.3MB

Download
memory/4908-32-0x00000000720EE000-0x00000000720EF000-memory.dmp

Filesize
4KB

Download
memory/4908-41-0x00000000720EE000-0x00000000720EF000-memory.dmp

Filesize
4KB

Download
memory/4908-39-0x000000003A330000-0x000000003A33A000-memory.dmp

Filesize
40KB

Download
memory/4908-34-0x00000000392B0000-0x0000000039854000-memory.dmp

Filesize
5.6MB

Download
memory/4908-35-0x00000000067D0000-0x0000000006836000-memory.dmp

Filesize
408KB

Download
memory/4908-36-0x00000000720E0000-0x0000000072890000-memory.dmp

Filesize
7.7MB

Download
memory/4908-31-0x00000000016F0000-0x0000000006744000-memory.dmp

Filesize
80.3MB

Download
memory/4908-37-0x000000003A210000-0x000000003A260000-memory.dmp

Filesize
320KB

Download
memory/4908-38-0x000000003A260000-0x000000003A2F2000-memory.dmp

Filesize
584KB

Download
memory/5012-25-0x0000000074345000-0x0000000074346000-memory.dmp

Filesize
4KB

Download
memory/5012-23-0x0000000076EA1000-0x0000000076FC1000-memory.dmp

Filesize
1.1MB

Download
memory/5012-24-0x0000000076EA1000-0x0000000076FC1000-memory.dmp

Filesize
1.1MB

Download

Analysis

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