agenttesla | b2d092923decbb77dea424a3d430b58b1fd2b94a57f616a64a4ca7de1f721d27

General

Target

fb36897fa9e0f60691b011aa1d48bce4.exe
Size

522KB
MD5

fb36897fa9e0f60691b011aa1d48bce4
SHA1

41b88df0292611747097d824a9a75015397add79
SHA256

b2d092923decbb77dea424a3d430b58b1fd2b94a57f616a64a4ca7de1f721d27
SHA512

f42b6e2398e300734003f1e72a0c346358b2b5d4c72be3229e82d3e727edbfcbc1c3e66ab9a90b4665f7b9a4263cc5d04ce4c1da269040a336df54e01fd84642

Score

10^/10

agenttesla coreentity keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Credentials

Protocol: smtp
Host:
mail.prudential.com.np
Port:
587
Username:
damauli@prudential.com.np
Password:
ensure@prudential

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.prudential.com.np
Port:
587
Username:
damauli@prudential.com.np
Password:
ensure@prudential

Signatures

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

CoreEntity .NET Packer 1 IoCs

A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.

coreentity

Processes:

resource	yara_rule
behavioral2/memory/4704-6-0x0000000000A80000-0x0000000000A83000-memory.dmp	coreentity

AgentTesla Payload 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3300-11-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral2/memory/3300-12-0x000000000044BCDE-mapping.dmp	family_agenttesla

rezer0 1 IoCs

Detects ReZer0, a packer with multiple versions used in various campaigns.

rezer0

Processes:

resource	yara_rule
behavioral2/memory/4704-7-0x000000000AA00000-0x000000000AA52000-memory.dmp	rezer0

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
Suspicious use of SetThreadContext 1 IoCs

Processes:

fb36897fa9e0f60691b011aa1d48bce4.exe

description pid process target process

PID 4704 set thread context of 3300 4704 fb36897fa9e0f60691b011aa1d48bce4.exe fb36897fa9e0f60691b011aa1d48bce4.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

2820 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

fb36897fa9e0f60691b011aa1d48bce4.exe

pid process

3300 fb36897fa9e0f60691b011aa1d48bce4.exe
3300 fb36897fa9e0f60691b011aa1d48bce4.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

fb36897fa9e0f60691b011aa1d48bce4.exefb36897fa9e0f60691b011aa1d48bce4.exe

description pid process

Token: SeDebugPrivilege 4704 fb36897fa9e0f60691b011aa1d48bce4.exe
Token: SeDebugPrivilege 3300 fb36897fa9e0f60691b011aa1d48bce4.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

fb36897fa9e0f60691b011aa1d48bce4.exe

pid process

4704 fb36897fa9e0f60691b011aa1d48bce4.exe
4704 fb36897fa9e0f60691b011aa1d48bce4.exe

description	pid	process	target process
PID 4704 set thread context of 3300	4704	fb36897fa9e0f60691b011aa1d48bce4.exe	fb36897fa9e0f60691b011aa1d48bce4.exe

pid	process
2820	schtasks.exe

pid	process
3300	fb36897fa9e0f60691b011aa1d48bce4.exe
3300	fb36897fa9e0f60691b011aa1d48bce4.exe

description	pid	process
Token: SeDebugPrivilege	4704	fb36897fa9e0f60691b011aa1d48bce4.exe
Token: SeDebugPrivilege	3300	fb36897fa9e0f60691b011aa1d48bce4.exe

pid	process
4704	fb36897fa9e0f60691b011aa1d48bce4.exe
4704	fb36897fa9e0f60691b011aa1d48bce4.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

fb36897fa9e0f60691b011aa1d48bce4.exe

description	pid	process	target process
PID 4704 wrote to memory of 2820	4704	fb36897fa9e0f60691b011aa1d48bce4.exe	schtasks.exe
PID 4704 wrote to memory of 2820	4704	fb36897fa9e0f60691b011aa1d48bce4.exe	schtasks.exe
PID 4704 wrote to memory of 2820	4704	fb36897fa9e0f60691b011aa1d48bce4.exe	schtasks.exe
PID 4704 wrote to memory of 3300	4704	fb36897fa9e0f60691b011aa1d48bce4.exe	fb36897fa9e0f60691b011aa1d48bce4.exe
PID 4704 wrote to memory of 3300	4704	fb36897fa9e0f60691b011aa1d48bce4.exe	fb36897fa9e0f60691b011aa1d48bce4.exe
PID 4704 wrote to memory of 3300	4704	fb36897fa9e0f60691b011aa1d48bce4.exe	fb36897fa9e0f60691b011aa1d48bce4.exe
PID 4704 wrote to memory of 3300	4704	fb36897fa9e0f60691b011aa1d48bce4.exe	fb36897fa9e0f60691b011aa1d48bce4.exe
PID 4704 wrote to memory of 3300	4704	fb36897fa9e0f60691b011aa1d48bce4.exe	fb36897fa9e0f60691b011aa1d48bce4.exe
PID 4704 wrote to memory of 3300	4704	fb36897fa9e0f60691b011aa1d48bce4.exe	fb36897fa9e0f60691b011aa1d48bce4.exe
PID 4704 wrote to memory of 3300	4704	fb36897fa9e0f60691b011aa1d48bce4.exe	fb36897fa9e0f60691b011aa1d48bce4.exe
PID 4704 wrote to memory of 3300	4704	fb36897fa9e0f60691b011aa1d48bce4.exe	fb36897fa9e0f60691b011aa1d48bce4.exe

C:\Users\Admin\AppData\Local\Temp\fb36897fa9e0f60691b011aa1d48bce4.exe
"C:\Users\Admin\AppData\Local\Temp\fb36897fa9e0f60691b011aa1d48bce4.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4704

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\yDmRCoLfg" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5951.tmp"
2⤵
- Creates scheduled task(s)
PID:2820

C:\Users\Admin\AppData\Local\Temp\fb36897fa9e0f60691b011aa1d48bce4.exe
"{path}"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3300

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Credentials in Files

2

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\fb36897fa9e0f60691b011aa1d48bce4.exe.log
MD5
b4f7a6a57cb46d94b72410eb6a6d45a9

SHA1
69f3596ffa027202d391444b769ceea0ae14c5f7

SHA256
23994ebe221a48ea16ebad51ae0d4b47ccd415ae10581f9405e588d4f6c2523b

SHA512
be6da516e54c3a5b33ac2603137a2f8cf8445ff5961dd266faedf3627bae8979953d7ef305538df0151c609917a5b99bf5d023bdd32de50fd5c723950f90db5c

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp5951.tmp
MD5
827a8c6b095ab732c695dbf989584547

SHA1
a9271efd5ece319018b015dd51321839b171bb76

SHA256
e015a8eb6600746a868473624a8747eec6056e48d4e96ca950a3a9e304c87e51

SHA512
28f148cd85d423ec9525b054f52f5ffe57dd081abfe858bd5053c80f1f3dca1430abc33551b825c4585eefc794af37823ee1441f17a554438d66eda04de9a58e

Download Submit
memory/2820-9-0x0000000000000000-mapping.dmp

Download
memory/3300-11-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/3300-20-0x0000000005CF0000-0x0000000005CF1000-memory.dmp

Filesize
4KB

Download
memory/3300-19-0x0000000005120000-0x0000000005121000-memory.dmp

Filesize
4KB

Download
memory/3300-14-0x0000000073FA0000-0x000000007468E000-memory.dmp

Filesize
6.9MB

Download
memory/3300-12-0x000000000044BCDE-mapping.dmp

Download
memory/4704-3-0x00000000074D0000-0x00000000074D1000-memory.dmp

Filesize
4KB

Download
memory/4704-4-0x0000000007070000-0x0000000007071000-memory.dmp

Filesize
4KB

Download
memory/4704-0-0x0000000073FA0000-0x000000007468E000-memory.dmp

Filesize
6.9MB

Download
memory/4704-8-0x000000000A960000-0x000000000A961000-memory.dmp

Filesize
4KB

Download
memory/4704-1-0x00000000001B0000-0x00000000001B1000-memory.dmp

Filesize
4KB

Download
memory/4704-7-0x000000000AA00000-0x000000000AA52000-memory.dmp

Filesize
328KB

Download
memory/4704-6-0x0000000000A80000-0x0000000000A83000-memory.dmp

Filesize
12KB

Download
memory/4704-5-0x0000000002860000-0x0000000002861000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads