agenttesla | 426b848cda53101176ea6be395dc2df7d58fd336d81ecdfa5ac2ad1a0f9dca20

General

Target

CI_PL_BL.xlsx
Size

2.1MB
MD5

5e6349fed617844564a6c93755bd4a38
SHA1

3241352e990be6e66e0a018ed2c8ef7952db049a
SHA256

426b848cda53101176ea6be395dc2df7d58fd336d81ecdfa5ac2ad1a0f9dca20
SHA512

13d12b8cc70ae68ab7944b790de4f45c5219d69be5cf26f738bb3d3df089b25ee8605085c065dd0117799202d90f4cfb08889ad5f0d1eb5d0ee03b37a98b7c27

Score

10^/10

agenttesla keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot1354395790:AAGs5t1VElMZzeygESEl5DtA0jHdLInLstE/sendDocument

Signatures

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

AgentTesla Payload 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1616-15-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/1616-16-0x00000000004376EE-mapping.dmp	family_agenttesla
behavioral1/memory/1616-18-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/1616-19-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

6 1652 EQNEDT32.EXE
Executes dropped EXE 3 IoCs

Processes:

vbc.exevbc.exevbc.exe

pid process

1092 vbc.exe
1612 vbc.exe
1616 vbc.exe
Loads dropped DLL 1 IoCs

Processes:

EQNEDT32.EXE

pid process

1652 EQNEDT32.EXE
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware

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

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

Data from Local System
T1005

Credentials in Files
T1081
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

7 api.ipify.org
8 api.ipify.org
Suspicious use of SetThreadContext 1 IoCs

Processes:

vbc.exe

description pid process target process

PID 1092 set thread context of 1616 1092 vbc.exe vbc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

852 schtasks.exe
Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

EXCEL.EXE

description ioc process

Key opened \REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor EXCEL.EXE
Launches Equation Editor 1 TTPs 1 IoCs
Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.
exploit

Exploitation for Client Execution
T1203

Processes:

EQNEDT32.EXE

pid process

1652 EQNEDT32.EXE

flow	pid	process
6	1652	EQNEDT32.EXE

pid	process
1092	vbc.exe
1612	vbc.exe
1616	vbc.exe

pid	process
1652	EQNEDT32.EXE

flow	ioc
7	api.ipify.org
8	api.ipify.org

description	pid	process	target process
PID 1092 set thread context of 1616	1092	vbc.exe	vbc.exe

pid	process
852	schtasks.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor	EXCEL.EXE

pid	process
1652	EQNEDT32.EXE

Modifies Internet Explorer settings 1 TTPs 9 IoCs

adware spyware

Modify Registry

T1112

Processes:

EXCEL.EXE

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1660 EXCEL.EXE
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

vbc.exevbc.exe

pid process

1092 vbc.exe
1092 vbc.exe
1616 vbc.exe
1616 vbc.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

vbc.exevbc.exe

description pid process

Token: SeDebugPrivilege 1092 vbc.exe
Token: SeDebugPrivilege 1616 vbc.exe
Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

EXCEL.EXEvbc.exe

pid process

1660 EXCEL.EXE
1660 EXCEL.EXE
1660 EXCEL.EXE
1616 vbc.exe

pid	process
1660	EXCEL.EXE

pid	process
1092	vbc.exe
1092	vbc.exe
1616	vbc.exe
1616	vbc.exe

description	pid	process
Token: SeDebugPrivilege	1092	vbc.exe
Token: SeDebugPrivilege	1616	vbc.exe

pid	process
1660	EXCEL.EXE
1660	EXCEL.EXE
1660	EXCEL.EXE
1616	vbc.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

EQNEDT32.EXEvbc.exe

description	pid	process	target process
PID 1652 wrote to memory of 1092	1652	EQNEDT32.EXE	vbc.exe
PID 1652 wrote to memory of 1092	1652	EQNEDT32.EXE	vbc.exe
PID 1652 wrote to memory of 1092	1652	EQNEDT32.EXE	vbc.exe
PID 1652 wrote to memory of 1092	1652	EQNEDT32.EXE	vbc.exe
PID 1092 wrote to memory of 852	1092	vbc.exe	schtasks.exe
PID 1092 wrote to memory of 852	1092	vbc.exe	schtasks.exe
PID 1092 wrote to memory of 852	1092	vbc.exe	schtasks.exe
PID 1092 wrote to memory of 852	1092	vbc.exe	schtasks.exe
PID 1092 wrote to memory of 1612	1092	vbc.exe	vbc.exe
PID 1092 wrote to memory of 1612	1092	vbc.exe	vbc.exe
PID 1092 wrote to memory of 1612	1092	vbc.exe	vbc.exe
PID 1092 wrote to memory of 1612	1092	vbc.exe	vbc.exe
PID 1092 wrote to memory of 1616	1092	vbc.exe	vbc.exe
PID 1092 wrote to memory of 1616	1092	vbc.exe	vbc.exe
PID 1092 wrote to memory of 1616	1092	vbc.exe	vbc.exe
PID 1092 wrote to memory of 1616	1092	vbc.exe	vbc.exe
PID 1092 wrote to memory of 1616	1092	vbc.exe	vbc.exe
PID 1092 wrote to memory of 1616	1092	vbc.exe	vbc.exe
PID 1092 wrote to memory of 1616	1092	vbc.exe	vbc.exe
PID 1092 wrote to memory of 1616	1092	vbc.exe	vbc.exe
PID 1092 wrote to memory of 1616	1092	vbc.exe	vbc.exe

C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\CI_PL_BL.xlsx
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:1660

C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
"C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
1⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Launches Equation Editor
- Suspicious use of WriteProcessMemory
PID:1652

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1092

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\cemiba" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1027.tmp"
3⤵
- Creates scheduled task(s)
PID:852

C:\Users\Public\vbc.exe
"{path}"
3⤵
- Executes dropped EXE
PID:1612

C:\Users\Public\vbc.exe
"{path}"
3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1616

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

1

T1064

Scheduled Task

1

T1053

Exploitation for Client Execution

1

T1203

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Scripting

1

T1064

Modify Registry

1

T1112

Credential Access

Credentials in Files

3

T1081

Discovery

System Information Discovery

2

T1082

Query Registry

1

T1012

Lateral Movement

Collection

Data from Local System

3

T1005

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp1027.tmp
MD5
f1f74bbcc75c00f26f500d4fa802abbc

SHA1
f453b28f6822f4a6bd89283c67a295ba39bcf228

SHA256
abf68c30355d06c542a1a4abb8d10ddfd1aea6aa8c9f7b7ebe1a72efd23572c4

SHA512
0cc12bc54b7b42cba7cec16b03dc2fe07c7fa4f7e357b8049aada0272d9ed3edd0b20e3779e4795e9b1fb945ede6d77d011f9b83017bf7d81474c2d66dff7b03

Download Submit
C:\Users\Public\vbc.exe
MD5
0b8b3fa0c3fed86cd8760db8caae9c28

SHA1
44d1ee0b8caed12f951d0620087cb118adeb86d6

SHA256
d9f9c20cffb078037e8936fe93ab6237a29b6fe41075305ec1dd5800242606bb

SHA512
56879142acf6d95a05bceac615ec03094672d91c89b2b16d08fdeb74c1eaf880fa3f021f2d3af4032815f8aa19288a02f8abf260fa03c0ccdf1ba853f74da016

Download Submit
C:\Users\Public\vbc.exe
MD5
0b8b3fa0c3fed86cd8760db8caae9c28

SHA1
44d1ee0b8caed12f951d0620087cb118adeb86d6

SHA256
d9f9c20cffb078037e8936fe93ab6237a29b6fe41075305ec1dd5800242606bb

SHA512
56879142acf6d95a05bceac615ec03094672d91c89b2b16d08fdeb74c1eaf880fa3f021f2d3af4032815f8aa19288a02f8abf260fa03c0ccdf1ba853f74da016

Download Submit
C:\Users\Public\vbc.exe
MD5
0b8b3fa0c3fed86cd8760db8caae9c28

SHA1
44d1ee0b8caed12f951d0620087cb118adeb86d6

SHA256
d9f9c20cffb078037e8936fe93ab6237a29b6fe41075305ec1dd5800242606bb

SHA512
56879142acf6d95a05bceac615ec03094672d91c89b2b16d08fdeb74c1eaf880fa3f021f2d3af4032815f8aa19288a02f8abf260fa03c0ccdf1ba853f74da016

Download Submit
C:\Users\Public\vbc.exe
MD5
0b8b3fa0c3fed86cd8760db8caae9c28

SHA1
44d1ee0b8caed12f951d0620087cb118adeb86d6

SHA256
d9f9c20cffb078037e8936fe93ab6237a29b6fe41075305ec1dd5800242606bb

SHA512
56879142acf6d95a05bceac615ec03094672d91c89b2b16d08fdeb74c1eaf880fa3f021f2d3af4032815f8aa19288a02f8abf260fa03c0ccdf1ba853f74da016

Download Submit
\Users\Public\vbc.exe
MD5
0b8b3fa0c3fed86cd8760db8caae9c28

SHA1
44d1ee0b8caed12f951d0620087cb118adeb86d6

SHA256
d9f9c20cffb078037e8936fe93ab6237a29b6fe41075305ec1dd5800242606bb

SHA512
56879142acf6d95a05bceac615ec03094672d91c89b2b16d08fdeb74c1eaf880fa3f021f2d3af4032815f8aa19288a02f8abf260fa03c0ccdf1ba853f74da016

Download Submit
memory/680-2-0x000007FEF5B70000-0x000007FEF5DEA000-memory.dmp

Filesize
2.5MB

Download
memory/852-12-0x0000000000000000-mapping.dmp

Download
memory/1092-8-0x0000000000950000-0x0000000000951000-memory.dmp

Filesize
4KB

Download
memory/1092-10-0x0000000000450000-0x000000000045E000-memory.dmp

Filesize
56KB

Download
memory/1092-11-0x0000000005700000-0x0000000005799000-memory.dmp

Filesize
612KB

Download
memory/1092-7-0x000000006BF90000-0x000000006C67E000-memory.dmp

Filesize
6.9MB

Download
memory/1092-4-0x0000000000000000-mapping.dmp

Download
memory/1616-15-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1616-18-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1616-16-0x00000000004376EE-mapping.dmp

Download
memory/1616-19-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1616-20-0x000000006BF90000-0x000000006C67E000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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