agenttesla | 71032ee8d3bb7e5b97fc58c2478c58b218730eb7a56929da7c5d4816e202e71c

General

Target

OLUn8L3Z.exe
Size

940KB
MD5

d7a6c07be5a5f212884d01797c3d5fa6
SHA1

e4cb2a03354a7417f1062c89b0f08018863380df
SHA256

71032ee8d3bb7e5b97fc58c2478c58b218730eb7a56929da7c5d4816e202e71c
SHA512

50cddcdff86594fea2f2ffe24cdef71b0bf9fbd46703f3dca37f2a89630a57ea63c0b5cbd2d0be682e2e9f03bdcb478cd61c5bc959fa7f35d132e70f04f20d7c

Score

10^/10

agenttesla keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.mesco-midhco.com
Port:
587
Username:
[email protected]
Password:
fFEawV%0

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/436-68-0x000000000043749E-mapping.dmp	family_agenttesla
behavioral1/memory/436-67-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/436-69-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

OLUn8L3Z.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run\pGKuRU = "C:\\Users\\Admin\\AppData\\Roaming\\pGKuRU\\pGKuRU.exe"	OLUn8L3Z.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

OLUn8L3Z.exe

description pid process target process

PID 772 set thread context of 436 772 OLUn8L3Z.exe OLUn8L3Z.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

1128 schtasks.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

OLUn8L3Z.exeOLUn8L3Z.exe

pid process

772 OLUn8L3Z.exe
772 OLUn8L3Z.exe
772 OLUn8L3Z.exe
772 OLUn8L3Z.exe
436 OLUn8L3Z.exe
436 OLUn8L3Z.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

OLUn8L3Z.exeOLUn8L3Z.exe

description pid process

Token: SeDebugPrivilege 772 OLUn8L3Z.exe
Token: SeDebugPrivilege 436 OLUn8L3Z.exe

description	pid	process	target process
PID 772 set thread context of 436	772	OLUn8L3Z.exe	OLUn8L3Z.exe

pid	process
1128	schtasks.exe

pid	process
772	OLUn8L3Z.exe
772	OLUn8L3Z.exe
772	OLUn8L3Z.exe
772	OLUn8L3Z.exe
436	OLUn8L3Z.exe
436	OLUn8L3Z.exe

description	pid	process
Token: SeDebugPrivilege	772	OLUn8L3Z.exe
Token: SeDebugPrivilege	436	OLUn8L3Z.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

OLUn8L3Z.exe

description	pid	process	target process
PID 772 wrote to memory of 1128	772	OLUn8L3Z.exe	schtasks.exe
PID 772 wrote to memory of 1128	772	OLUn8L3Z.exe	schtasks.exe
PID 772 wrote to memory of 1128	772	OLUn8L3Z.exe	schtasks.exe
PID 772 wrote to memory of 1128	772	OLUn8L3Z.exe	schtasks.exe
PID 772 wrote to memory of 524	772	OLUn8L3Z.exe	OLUn8L3Z.exe
PID 772 wrote to memory of 524	772	OLUn8L3Z.exe	OLUn8L3Z.exe
PID 772 wrote to memory of 524	772	OLUn8L3Z.exe	OLUn8L3Z.exe
PID 772 wrote to memory of 524	772	OLUn8L3Z.exe	OLUn8L3Z.exe
PID 772 wrote to memory of 436	772	OLUn8L3Z.exe	OLUn8L3Z.exe
PID 772 wrote to memory of 436	772	OLUn8L3Z.exe	OLUn8L3Z.exe
PID 772 wrote to memory of 436	772	OLUn8L3Z.exe	OLUn8L3Z.exe
PID 772 wrote to memory of 436	772	OLUn8L3Z.exe	OLUn8L3Z.exe
PID 772 wrote to memory of 436	772	OLUn8L3Z.exe	OLUn8L3Z.exe
PID 772 wrote to memory of 436	772	OLUn8L3Z.exe	OLUn8L3Z.exe
PID 772 wrote to memory of 436	772	OLUn8L3Z.exe	OLUn8L3Z.exe
PID 772 wrote to memory of 436	772	OLUn8L3Z.exe	OLUn8L3Z.exe
PID 772 wrote to memory of 436	772	OLUn8L3Z.exe	OLUn8L3Z.exe

C:\Users\Admin\AppData\Local\Temp\OLUn8L3Z.exe
"C:\Users\Admin\AppData\Local\Temp\OLUn8L3Z.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:772

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ainJbd" /XML "C:\Users\Admin\AppData\Local\Temp\tmpBE8E.tmp"
2⤵
- Creates scheduled task(s)
PID:1128

C:\Users\Admin\AppData\Local\Temp\OLUn8L3Z.exe
"C:\Users\Admin\AppData\Local\Temp\OLUn8L3Z.exe"
2⤵
PID:524

C:\Users\Admin\AppData\Local\Temp\OLUn8L3Z.exe
"C:\Users\Admin\AppData\Local\Temp\OLUn8L3Z.exe"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:436

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

1

T1060

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpBE8E.tmp
MD5
4373b3bdde19e749b14d3ec74d260a31

SHA1
c1d3a59a592e89f32607e99ae84769604f9b72bc

SHA256
44fab6e7dde90ae77d399db6c981758361515fb8be3f66b1fc05fcbd44985a40

SHA512
45fc4967f103f4e6113158acb4defdf7e4865ea134def5f9467474f7370588dc88ab46ffbf1ca6b800bd50973db51aace94e0fa68a827ed77514ac355ea6bd91

Download Submit
memory/436-68-0x000000000043749E-mapping.dmp

Download
memory/436-67-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/436-69-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/436-71-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/772-59-0x0000000000CD0000-0x0000000000CD1000-memory.dmp

Filesize
4KB

Download
memory/772-61-0x0000000004C60000-0x0000000004C61000-memory.dmp

Filesize
4KB

Download
memory/772-62-0x00000000007D0000-0x00000000007D9000-memory.dmp

Filesize
36KB

Download
memory/772-63-0x0000000004DA0000-0x0000000004E20000-memory.dmp

Filesize
512KB

Download
memory/772-64-0x0000000005040000-0x0000000005087000-memory.dmp

Filesize
284KB

Download
memory/1128-65-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads