agenttesla | b84177ba29d940b494894ef69a3899a438079a9fc64607c9444c2856d5d5b273

General

Target

454362_PURCHASE ORDER.exe
Size

433KB
MD5

9bc66f36baedd02eb6b55e391d90b324
SHA1

aaa6786ed70237361fb28250da350181d0fd28fe
SHA256

4b1a13f1b1a0bff19df63d1ebf93a2c1c390896b77db3b724a2e5c03f6007d81
SHA512

027dbf3d56939ad0d7f4bae865863e9da23d3be4278b2e7a257b8c08b135390322b298c4bece43cda407c6eeec07c4f41a5d5b72bcee4018c65b6530aa3f462e

Score

10^/10

agenttesla evasion keylogger persistence rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.microtechlab.in
Port:
587
Username:
[email protected]
Password:
pune@123

Signatures

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

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1276-63-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1276-64-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1276-65-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1276-66-0x000000000044CF5E-mapping.dmp	family_agenttesla
behavioral1/memory/1276-68-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1276-70-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla

ReZer0 packer 1 IoCs

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

rezer0

Processes:

resource	yara_rule
behavioral1/memory/1888-56-0x0000000000D60000-0x0000000000DB8000-memory.dmp	rezer0

Disables Task Manager via registry modification
evasion
Drops file in Drivers directory 1 IoCs

Processes:

RegSvcs.exe

description ioc process

File opened for modification C:\Windows\system32\drivers\etc\hosts RegSvcs.exe

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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

RegSvcs.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows\CurrentVersion\Run\CpSnJ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\CpSnJ\\CpSnJ.exe"	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

454362_PURCHASE ORDER.exe

description pid process target process

PID 1888 set thread context of 1276 1888 454362_PURCHASE ORDER.exe RegSvcs.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

1400 schtasks.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

964 REG.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

454362_PURCHASE ORDER.exeRegSvcs.exe

pid process

1888 454362_PURCHASE ORDER.exe
1888 454362_PURCHASE ORDER.exe
1888 454362_PURCHASE ORDER.exe
1276 RegSvcs.exe
1276 RegSvcs.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

454362_PURCHASE ORDER.exeRegSvcs.exe

description pid process

Token: SeDebugPrivilege 1888 454362_PURCHASE ORDER.exe
Token: SeDebugPrivilege 1276 RegSvcs.exe

description	pid	process	target process
PID 1888 set thread context of 1276	1888	454362_PURCHASE ORDER.exe	RegSvcs.exe

pid	process
1400	schtasks.exe

pid	process
964	REG.exe

pid	process
1888	454362_PURCHASE ORDER.exe
1888	454362_PURCHASE ORDER.exe
1888	454362_PURCHASE ORDER.exe
1276	RegSvcs.exe
1276	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	1888	454362_PURCHASE ORDER.exe
Token: SeDebugPrivilege	1276	RegSvcs.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

454362_PURCHASE ORDER.exeRegSvcs.exe

description	pid	process	target process
PID 1888 wrote to memory of 1400	1888	454362_PURCHASE ORDER.exe	schtasks.exe
PID 1888 wrote to memory of 1400	1888	454362_PURCHASE ORDER.exe	schtasks.exe
PID 1888 wrote to memory of 1400	1888	454362_PURCHASE ORDER.exe	schtasks.exe
PID 1888 wrote to memory of 1400	1888	454362_PURCHASE ORDER.exe	schtasks.exe
PID 1888 wrote to memory of 1276	1888	454362_PURCHASE ORDER.exe	RegSvcs.exe
PID 1888 wrote to memory of 1276	1888	454362_PURCHASE ORDER.exe	RegSvcs.exe
PID 1888 wrote to memory of 1276	1888	454362_PURCHASE ORDER.exe	RegSvcs.exe
PID 1888 wrote to memory of 1276	1888	454362_PURCHASE ORDER.exe	RegSvcs.exe
PID 1888 wrote to memory of 1276	1888	454362_PURCHASE ORDER.exe	RegSvcs.exe
PID 1888 wrote to memory of 1276	1888	454362_PURCHASE ORDER.exe	RegSvcs.exe
PID 1888 wrote to memory of 1276	1888	454362_PURCHASE ORDER.exe	RegSvcs.exe
PID 1888 wrote to memory of 1276	1888	454362_PURCHASE ORDER.exe	RegSvcs.exe
PID 1888 wrote to memory of 1276	1888	454362_PURCHASE ORDER.exe	RegSvcs.exe
PID 1888 wrote to memory of 1276	1888	454362_PURCHASE ORDER.exe	RegSvcs.exe
PID 1888 wrote to memory of 1276	1888	454362_PURCHASE ORDER.exe	RegSvcs.exe
PID 1888 wrote to memory of 1276	1888	454362_PURCHASE ORDER.exe	RegSvcs.exe
PID 1276 wrote to memory of 964	1276	RegSvcs.exe	REG.exe
PID 1276 wrote to memory of 964	1276	RegSvcs.exe	REG.exe
PID 1276 wrote to memory of 964	1276	RegSvcs.exe	REG.exe
PID 1276 wrote to memory of 964	1276	RegSvcs.exe	REG.exe

C:\Users\Admin\AppData\Local\Temp\454362_PURCHASE ORDER.exe
"C:\Users\Admin\AppData\Local\Temp\454362_PURCHASE ORDER.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1888

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\myhqZugPIlg" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1843.tmp"
2⤵
- Creates scheduled task(s)
PID:1400

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"{path}"
2⤵
- Drops file in Drivers directory
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1276

C:\Windows\SysWOW64\REG.exe
REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f
3⤵
- Modifies registry key
PID:964

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

2

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp1843.tmp
Filesize
1KB

MD5
b946dbd1a3eff669ac965e7754ef1160

SHA1
5409a28fe0b554d94d322b9dc2d28edbda96dd45

SHA256
c39062aa15c78d8da3fb60bb18bdaeb5384414c58e17731c3a6a1ec01535f1b1

SHA512
f37356fa70978b5985020e11bb032b792a42b7d7af56662656362e37ab8040f2bc7b660de2d8109730b777aeb007554bce49670c58e432052f1a5c0c2d331c86

Download Submit
memory/964-72-0x0000000000000000-mapping.dmp

Download
memory/1276-64-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1276-60-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1276-61-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1276-63-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1276-65-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1276-66-0x000000000044CF5E-mapping.dmp

Download
memory/1276-68-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1276-70-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1400-58-0x0000000000000000-mapping.dmp

Download
memory/1888-57-0x0000000076191000-0x0000000076193000-memory.dmp

Filesize
8KB

Download
memory/1888-56-0x0000000000D60000-0x0000000000DB8000-memory.dmp

Filesize
352KB

Download
memory/1888-54-0x0000000001340000-0x00000000013B2000-memory.dmp

Filesize
456KB

Download
memory/1888-55-0x00000000004F0000-0x00000000004F8000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads