agenttesla | f1be45f58c89c8b3b77fda6341568c4388d95ded7597304a04b98c57ddfc4a6c

General

Target

confirm below invoice.exe
Size

798KB
MD5

622f89217d5c630c8493f356a3ed5e23
SHA1

c8275a16747ae7c550f1b14e71c91dc06eb1ceef
SHA256

f1be45f58c89c8b3b77fda6341568c4388d95ded7597304a04b98c57ddfc4a6c
SHA512

e0ecf783296afac12ce6ac7567721f5ae9542047f145fd4f40703840781cf34e5b19229f3df9ffc07981e4b085881ca4a41d3c7076abdc31180fdaf5588d335e

Score

10^/10

agenttesla keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.ckclegal.com
Port:
587
Username:
[email protected]
Password:
S1_CJLP=XwM+

Signatures

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

AgentTesla Payload 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1260-68-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/1260-69-0x00000000004376DE-mapping.dmp	family_agenttesla
behavioral1/memory/1260-70-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla

Drops file in Drivers directory 1 IoCs

Processes:

confirm below invoice.exe

description ioc process

File opened for modification C:\Windows\system32\drivers\etc\hosts confirm below invoice.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

description	ioc	process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	confirm below invoice.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

confirm below invoice.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run\WCPCe = "C:\\Users\\Admin\\AppData\\Roaming\\WCPCe\\WCPCe.exe"	confirm below invoice.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

confirm below invoice.exe

description pid process target process

PID 1304 set thread context of 1260 1304 confirm below invoice.exe confirm below invoice.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

656 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

confirm below invoice.exe

pid process

1260 confirm below invoice.exe
1260 confirm below invoice.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

confirm below invoice.exe

description pid process

Token: SeDebugPrivilege 1260 confirm below invoice.exe

description	pid	process	target process
PID 1304 set thread context of 1260	1304	confirm below invoice.exe	confirm below invoice.exe

pid	process
656	schtasks.exe

pid	process
1260	confirm below invoice.exe
1260	confirm below invoice.exe

description	pid	process
Token: SeDebugPrivilege	1260	confirm below invoice.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

confirm below invoice.exe

description	pid	process	target process
PID 1304 wrote to memory of 656	1304	confirm below invoice.exe	schtasks.exe
PID 1304 wrote to memory of 656	1304	confirm below invoice.exe	schtasks.exe
PID 1304 wrote to memory of 656	1304	confirm below invoice.exe	schtasks.exe
PID 1304 wrote to memory of 656	1304	confirm below invoice.exe	schtasks.exe
PID 1304 wrote to memory of 1260	1304	confirm below invoice.exe	confirm below invoice.exe
PID 1304 wrote to memory of 1260	1304	confirm below invoice.exe	confirm below invoice.exe
PID 1304 wrote to memory of 1260	1304	confirm below invoice.exe	confirm below invoice.exe
PID 1304 wrote to memory of 1260	1304	confirm below invoice.exe	confirm below invoice.exe
PID 1304 wrote to memory of 1260	1304	confirm below invoice.exe	confirm below invoice.exe
PID 1304 wrote to memory of 1260	1304	confirm below invoice.exe	confirm below invoice.exe
PID 1304 wrote to memory of 1260	1304	confirm below invoice.exe	confirm below invoice.exe
PID 1304 wrote to memory of 1260	1304	confirm below invoice.exe	confirm below invoice.exe
PID 1304 wrote to memory of 1260	1304	confirm below invoice.exe	confirm below invoice.exe

C:\Users\Admin\AppData\Local\Temp\confirm below invoice.exe
"C:\Users\Admin\AppData\Local\Temp\confirm below invoice.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1304

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\KBwCphfzgiBQUi" /XML "C:\Users\Admin\AppData\Local\Temp\tmpFF84.tmp"
2⤵
- Creates scheduled task(s)
PID:656

C:\Users\Admin\AppData\Local\Temp\confirm below invoice.exe
"{path}"
2⤵
- Drops file in Drivers directory
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1260

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

Scheduled Task

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

3

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

3

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpFF84.tmp

MD5
ee391be57ccfbf258c493fc061dc58f6

SHA1
7855e2149526d579f2b8f15a4880c3302bf47b8c

SHA256
eec3236d38e77804926a7fa85b7459c958d7bc1be2a6778326068f8c170fbcab

SHA512
6a835f638c1b936efc7a7ee00d3fd4586c326c5c3165bc26a2dc83bb60ebca29434a938c472e875af45ca34961dbc8e534a4f167e5f3c40f6a2e623985a8269e

Download Submit
memory/656-66-0x0000000000000000-mapping.dmp

Download
memory/1260-68-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1260-69-0x00000000004376DE-mapping.dmp

Download
memory/1260-70-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1260-72-0x0000000004A30000-0x0000000004A31000-memory.dmp

Filesize
4KB

Download
memory/1260-73-0x0000000004A31000-0x0000000004A32000-memory.dmp

Filesize
4KB

Download
memory/1304-60-0x0000000000DF0000-0x0000000000DF1000-memory.dmp

Filesize
4KB

Download
memory/1304-62-0x0000000004F20000-0x0000000004F21000-memory.dmp

Filesize
4KB

Download
memory/1304-63-0x00000000003C0000-0x00000000003C5000-memory.dmp

Filesize
20KB

Download
memory/1304-64-0x0000000007EC0000-0x0000000007F3E000-memory.dmp

Filesize
504KB

Download
memory/1304-65-0x0000000000630000-0x0000000000668000-memory.dmp

Filesize
224KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads