agenttesla | 71032ee8d3bb7e5b97fc58c2478c58b218730eb7a56929da7c5d4816e202e71c

General

Target

n8L3Z.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
behavioral2/memory/1184-126-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral2/memory/1184-127-0x000000000043749E-mapping.dmp	family_agenttesla
behavioral2/memory/1184-133-0x0000000004CE0000-0x00000000051DE000-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:

n8L3Z.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\pGKuRU = "C:\\Users\\Admin\\AppData\\Roaming\\pGKuRU\\pGKuRU.exe"	n8L3Z.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

n8L3Z.exe

description pid process target process

PID 1696 set thread context of 1184 1696 n8L3Z.exe n8L3Z.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

4076 schtasks.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

n8L3Z.exen8L3Z.exe

pid process

1696 n8L3Z.exe
1696 n8L3Z.exe
1696 n8L3Z.exe
1696 n8L3Z.exe
1184 n8L3Z.exe
1184 n8L3Z.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

n8L3Z.exen8L3Z.exe

description pid process

Token: SeDebugPrivilege 1696 n8L3Z.exe
Token: SeDebugPrivilege 1184 n8L3Z.exe

description	pid	process	target process
PID 1696 set thread context of 1184	1696	n8L3Z.exe	n8L3Z.exe

pid	process
4076	schtasks.exe

pid	process
1696	n8L3Z.exe
1696	n8L3Z.exe
1696	n8L3Z.exe
1696	n8L3Z.exe
1184	n8L3Z.exe
1184	n8L3Z.exe

description	pid	process
Token: SeDebugPrivilege	1696	n8L3Z.exe
Token: SeDebugPrivilege	1184	n8L3Z.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

n8L3Z.exe

description	pid	process	target process
PID 1696 wrote to memory of 4076	1696	n8L3Z.exe	schtasks.exe
PID 1696 wrote to memory of 4076	1696	n8L3Z.exe	schtasks.exe
PID 1696 wrote to memory of 4076	1696	n8L3Z.exe	schtasks.exe
PID 1696 wrote to memory of 1184	1696	n8L3Z.exe	n8L3Z.exe
PID 1696 wrote to memory of 1184	1696	n8L3Z.exe	n8L3Z.exe
PID 1696 wrote to memory of 1184	1696	n8L3Z.exe	n8L3Z.exe
PID 1696 wrote to memory of 1184	1696	n8L3Z.exe	n8L3Z.exe
PID 1696 wrote to memory of 1184	1696	n8L3Z.exe	n8L3Z.exe
PID 1696 wrote to memory of 1184	1696	n8L3Z.exe	n8L3Z.exe
PID 1696 wrote to memory of 1184	1696	n8L3Z.exe	n8L3Z.exe
PID 1696 wrote to memory of 1184	1696	n8L3Z.exe	n8L3Z.exe

C:\Users\Admin\AppData\Local\Temp\n8L3Z.exe
"C:\Users\Admin\AppData\Local\Temp\n8L3Z.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1696

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ainJbd" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8AAD.tmp"
2⤵
- Creates scheduled task(s)
PID:4076

C:\Users\Admin\AppData\Local\Temp\n8L3Z.exe
"C:\Users\Admin\AppData\Local\Temp\n8L3Z.exe"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1184

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

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\n8L3Z.exe.log
MD5
c3cc52ccca9ff2b6fa8d267fc350ca6b

SHA1
a68d4028333296d222e4afd75dea36fdc98d05f3

SHA256
3125b6071e2d78f575a06ed7ac32a83d9262ae64d1fa81ac43e8bfc1ef157c0e

SHA512
b0c7b2501b1a2c559795a9d178c0bbda0e03cbdbaaa2c4330ac1202a55373fe1b742078adcfa915bd6e805565a2daa6d35d64ef7a14ffcd09069f9ea6a691cc7

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp8AAD.tmp
MD5
e2dbe533d06927770b32d795c49fb510

SHA1
6ba40512427f52d8d2aa2b88c54ef275ed61b4f5

SHA256
353ea3d767376e893670e205666b8320e4e4965ec6ccb03d825bd9a94c990527

SHA512
b453d9e89fe8e8fe77f74ad4718bfd42d5ae752cf38335377f1fd77262012bb36cf88783ac540d010a04af1f8de07716c60f7925305f9e3592c49c6452d27816

Download Submit
memory/1184-135-0x0000000005A50000-0x0000000005A51000-memory.dmp

Filesize
4KB

Download
memory/1184-134-0x00000000051C0000-0x00000000051C1000-memory.dmp

Filesize
4KB

Download
memory/1184-133-0x0000000004CE0000-0x00000000051DE000-memory.dmp

Filesize
5.0MB

Download
memory/1184-127-0x000000000043749E-mapping.dmp

Download
memory/1184-126-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1696-119-0x0000000005080000-0x0000000005081000-memory.dmp

Filesize
4KB

Download
memory/1696-123-0x0000000009850000-0x0000000009897000-memory.dmp

Filesize
284KB

Download
memory/1696-122-0x0000000000F10000-0x0000000000F90000-memory.dmp

Filesize
512KB

Download
memory/1696-121-0x0000000004F20000-0x000000000541E000-memory.dmp

Filesize
5.0MB

Download
memory/1696-120-0x0000000005400000-0x0000000005409000-memory.dmp

Filesize
36KB

Download
memory/1696-114-0x0000000000560000-0x0000000000561000-memory.dmp

Filesize
4KB

Download
memory/1696-118-0x0000000004FC0000-0x0000000004FC1000-memory.dmp

Filesize
4KB

Download
memory/1696-117-0x0000000004F20000-0x0000000004F21000-memory.dmp

Filesize
4KB

Download
memory/1696-116-0x0000000005420000-0x0000000005421000-memory.dmp

Filesize
4KB

Download
memory/4076-124-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads