agenttesla | 811c8854ea3adcd1259c28cf1dc60e0a0a2f7a44f463e98f77c277a2a2f6394b

General

Target

Sigmanly_811c8854ea3adcd1259c28cf1dc60e0a0a2f7a44f463e98f77c277a2a2f6394b.exe
Size

538KB
MD5

fc76d8b178c0aa094eba5fea74e82614
SHA1

f2f88413e1e3aed4fd731769037c3d2391d29c94
SHA256

811c8854ea3adcd1259c28cf1dc60e0a0a2f7a44f463e98f77c277a2a2f6394b
SHA512

72f5ca123610cbc3ccee6630148c61e99f8ddbffbbe835eb2bf323a0a6d5f2fdd57bafa139595e62ea485f2086b1dd46f994281070639cd5e7ff89eb3422fd2b
SSDEEP

12288:ZOv5jKhsfoPA+yeVKUCUxP4C902bdRtJJPiGDtC2ajbP50s3o32+:Zq5TfcdHj4fmbcv13GV

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\unjuridically.vbs	unjuridically.exe

Executes dropped EXE 1 IoCs

pid	Process
5052	unjuridically.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
13	ip-api.com

AutoIT Executable 3 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/2992-19-0x0000000000060000-0x000000000019F000-memory.dmp	autoit_exe
behavioral2/memory/5052-33-0x0000000001860000-0x0000000001C60000-memory.dmp	autoit_exe
behavioral2/memory/5052-37-0x0000000000510000-0x000000000064F000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5052 set thread context of 4444	5052	unjuridically.exe	84

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2992-0-0x0000000000060000-0x000000000019F000-memory.dmp	upx
behavioral2/files/0x0007000000023c95-15.dat	upx
behavioral2/memory/5052-17-0x0000000000510000-0x000000000064F000-memory.dmp	upx
behavioral2/memory/2992-19-0x0000000000060000-0x000000000019F000-memory.dmp	upx
behavioral2/memory/5052-37-0x0000000000510000-0x000000000064F000-memory.dmp	upx

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	RegSvcs.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Sigmanly_811c8854ea3adcd1259c28cf1dc60e0a0a2f7a44f463e98f77c277a2a2f6394b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	unjuridically.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4444	RegSvcs.exe
4444	RegSvcs.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
5052	unjuridically.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4444	RegSvcs.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
2992	Sigmanly_811c8854ea3adcd1259c28cf1dc60e0a0a2f7a44f463e98f77c277a2a2f6394b.exe
2992	Sigmanly_811c8854ea3adcd1259c28cf1dc60e0a0a2f7a44f463e98f77c277a2a2f6394b.exe
5052	unjuridically.exe
5052	unjuridically.exe

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
2992	Sigmanly_811c8854ea3adcd1259c28cf1dc60e0a0a2f7a44f463e98f77c277a2a2f6394b.exe
2992	Sigmanly_811c8854ea3adcd1259c28cf1dc60e0a0a2f7a44f463e98f77c277a2a2f6394b.exe
5052	unjuridically.exe
5052	unjuridically.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2992 wrote to memory of 5052	2992	Sigmanly_811c8854ea3adcd1259c28cf1dc60e0a0a2f7a44f463e98f77c277a2a2f6394b.exe	83
PID 2992 wrote to memory of 5052	2992	Sigmanly_811c8854ea3adcd1259c28cf1dc60e0a0a2f7a44f463e98f77c277a2a2f6394b.exe	83
PID 2992 wrote to memory of 5052	2992	Sigmanly_811c8854ea3adcd1259c28cf1dc60e0a0a2f7a44f463e98f77c277a2a2f6394b.exe	83
PID 5052 wrote to memory of 4444	5052	unjuridically.exe	84
PID 5052 wrote to memory of 4444	5052	unjuridically.exe	84
PID 5052 wrote to memory of 4444	5052	unjuridically.exe	84
PID 5052 wrote to memory of 4444	5052	unjuridically.exe	84

C:\Users\Admin\AppData\Local\Temp\Sigmanly_811c8854ea3adcd1259c28cf1dc60e0a0a2f7a44f463e98f77c277a2a2f6394b.exe
"C:\Users\Admin\AppData\Local\Temp\Sigmanly_811c8854ea3adcd1259c28cf1dc60e0a0a2f7a44f463e98f77c277a2a2f6394b.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2992
- C:\Users\Admin\AppData\Local\Lityerses\unjuridically.exe
  "C:\Users\Admin\AppData\Local\Temp\Sigmanly_811c8854ea3adcd1259c28cf1dc60e0a0a2f7a44f463e98f77c277a2a2f6394b.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:5052
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "C:\Users\Admin\AppData\Local\Temp\Sigmanly_811c8854ea3adcd1259c28cf1dc60e0a0a2f7a44f463e98f77c277a2a2f6394b.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4444

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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\Lityerses\unjuridically.exe

Filesize
538KB

MD5
fc76d8b178c0aa094eba5fea74e82614

SHA1
f2f88413e1e3aed4fd731769037c3d2391d29c94

SHA256
811c8854ea3adcd1259c28cf1dc60e0a0a2f7a44f463e98f77c277a2a2f6394b

SHA512
72f5ca123610cbc3ccee6630148c61e99f8ddbffbbe835eb2bf323a0a6d5f2fdd57bafa139595e62ea485f2086b1dd46f994281070639cd5e7ff89eb3422fd2b

Download Submit
C:\Users\Admin\AppData\Local\Temp\acrorrheuma

Filesize
239KB

MD5
fd16ac67e115a223cc50f5019a3f052b

SHA1
1d703ac8ff6eb9450697cd1876405ae608e9cf37

SHA256
11374f7b169a7dd18927070d7961f1050fc8b6a98b9803eb15a2687f4a62d89d

SHA512
593582a3d9eb4d2a9e0a35099819a14fd3b6633456a2f33c48652bf97f615e34abc435bdf7c9144e54f9e7d6b88480110892b51e9d5d29e73698b80d493ef2fd

Download Submit
memory/2992-12-0x00000000010B0000-0x00000000014B0000-memory.dmp

Filesize
4.0MB

Download
memory/2992-0-0x0000000000060000-0x000000000019F000-memory.dmp

Filesize
1.2MB

Download
memory/2992-19-0x0000000000060000-0x000000000019F000-memory.dmp

Filesize
1.2MB

Download
memory/4444-35-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/4444-38-0x000000007373E000-0x000000007373F000-memory.dmp

Filesize
4KB

Download
memory/4444-39-0x00000000058F0000-0x0000000005E94000-memory.dmp

Filesize
5.6MB

Download
memory/4444-40-0x00000000053B0000-0x0000000005416000-memory.dmp

Filesize
408KB

Download
memory/4444-41-0x0000000073730000-0x0000000073EE0000-memory.dmp

Filesize
7.7MB

Download
memory/4444-42-0x0000000006520000-0x0000000006570000-memory.dmp

Filesize
320KB

Download
memory/4444-43-0x0000000006610000-0x00000000066A2000-memory.dmp

Filesize
584KB

Download
memory/4444-44-0x00000000065A0000-0x00000000065AA000-memory.dmp

Filesize
40KB

Download
memory/4444-45-0x000000007373E000-0x000000007373F000-memory.dmp

Filesize
4KB

Download
memory/4444-46-0x0000000073730000-0x0000000073EE0000-memory.dmp

Filesize
7.7MB

Download
memory/5052-33-0x0000000001860000-0x0000000001C60000-memory.dmp

Filesize
4.0MB

Download
memory/5052-17-0x0000000000510000-0x000000000064F000-memory.dmp

Filesize
1.2MB

Download
memory/5052-37-0x0000000000510000-0x000000000064F000-memory.dmp

Filesize
1.2MB

Download

Analysis

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