agenttesla | 5710878413615a629139b9d577c3fe4a603038a1cc5ac73a9f98b1b5d6e88854

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/432-68-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/432-69-0x00000000004376DE-mapping.dmp	family_agenttesla
behavioral1/memory/432-70-0x0000000000400000-0x000000000043C000-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-1-5-21-2513283230-931923277-594887482-1000\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 1104 set thread context of 432 1104 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

368 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

confirm below invoice.exe

pid process

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

Processes:

confirm below invoice.exe

description pid process

Token: SeDebugPrivilege 432 confirm below invoice.exe

description	pid	process	target process
PID 1104 set thread context of 432	1104	confirm below invoice.exe	confirm below invoice.exe

pid	process
368	schtasks.exe

pid	process
432	confirm below invoice.exe
432	confirm below invoice.exe

description	pid	process
Token: SeDebugPrivilege	432	confirm below invoice.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

confirm below invoice.exe

description	pid	process	target process
PID 1104 wrote to memory of 368	1104	confirm below invoice.exe	schtasks.exe
PID 1104 wrote to memory of 368	1104	confirm below invoice.exe	schtasks.exe
PID 1104 wrote to memory of 368	1104	confirm below invoice.exe	schtasks.exe
PID 1104 wrote to memory of 368	1104	confirm below invoice.exe	schtasks.exe
PID 1104 wrote to memory of 432	1104	confirm below invoice.exe	confirm below invoice.exe
PID 1104 wrote to memory of 432	1104	confirm below invoice.exe	confirm below invoice.exe
PID 1104 wrote to memory of 432	1104	confirm below invoice.exe	confirm below invoice.exe
PID 1104 wrote to memory of 432	1104	confirm below invoice.exe	confirm below invoice.exe
PID 1104 wrote to memory of 432	1104	confirm below invoice.exe	confirm below invoice.exe
PID 1104 wrote to memory of 432	1104	confirm below invoice.exe	confirm below invoice.exe
PID 1104 wrote to memory of 432	1104	confirm below invoice.exe	confirm below invoice.exe
PID 1104 wrote to memory of 432	1104	confirm below invoice.exe	confirm below invoice.exe
PID 1104 wrote to memory of 432	1104	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:1104

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\KBwCphfzgiBQUi" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA802.tmp"
2⤵
- Creates scheduled task(s)
PID:368

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:432

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\tmpA802.tmp

MD5
44ca54415c1dcdbbcccc28dc0c4b6c84

SHA1
644ebaac0e147a5bcf1e7c3bd8141e93e0ada336

SHA256
71f3203d10afb0317b09821495e5a18e20fab151a4161eb80e27310c98ddd4c3

SHA512
bc29d435177cc888ec108e29fdef00229f3827a8a1b1281c8fb82e44efcc9c4804e13f0b4950f7fe9bd99ea06540e15e3fe17bc27cf08624aee8f757b2e1c8dd

Download Submit
memory/368-66-0x0000000000000000-mapping.dmp

Download
memory/432-68-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/432-69-0x00000000004376DE-mapping.dmp

Download
memory/432-70-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/432-72-0x0000000004920000-0x0000000004921000-memory.dmp

Filesize
4KB

Download
memory/432-73-0x0000000004921000-0x0000000004922000-memory.dmp

Filesize
4KB

Download
memory/1104-60-0x0000000000D60000-0x0000000000D61000-memory.dmp

Filesize
4KB

Download
memory/1104-62-0x0000000004CC0000-0x0000000004CC1000-memory.dmp

Filesize
4KB

Download
memory/1104-63-0x0000000000540000-0x0000000000545000-memory.dmp

Filesize
20KB

Download
memory/1104-64-0x0000000005D40000-0x0000000005DBE000-memory.dmp

Filesize
504KB

Download
memory/1104-65-0x0000000000C90000-0x0000000000CC8000-memory.dmp

Filesize
224KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads