agenttesla | 3a94befc248570bf58be57f7b0e146985221219aefed7e437ddf865711b7c069

General

Target

Purchase - Order.exe
Size

491KB
MD5

c25db03537a94168fe05f968720c735a
SHA1

bdf8b7786bdd448a689e06347895ca8dbddab79c
SHA256

3a94befc248570bf58be57f7b0e146985221219aefed7e437ddf865711b7c069
SHA512

26f27f98183de9f87807add66919fbeabf1e6373dfd98360348860f551f3292deb347560cd2ac0fe7372424374d5f1b8a8add9d92739bca32e725374bb974241

Score

10^/10

agenttesla evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.zakhourco.com
Port:
587
Username:
mira.kassar@zakhourco.com
Password:
#Za$out%12

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/2080-127-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral2/memory/2080-128-0x000000000043784E-mapping.dmp	family_agenttesla
behavioral2/memory/2080-134-0x0000000005510000-0x0000000005A0E000-memory.dmp	family_agenttesla

Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

Purchase - Order.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	Purchase - Order.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	Purchase - Order.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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

Purchase - Order.exe

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

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

Purchase - Order.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	Purchase - Order.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum\0	Purchase - Order.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Purchase - Order.exe

description pid process target process

PID 4012 set thread context of 2080 4012 Purchase - Order.exe Purchase - Order.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

2232 schtasks.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

Purchase - Order.exePurchase - Order.exe

pid process

4012 Purchase - Order.exe
2080 Purchase - Order.exe
2080 Purchase - Order.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Purchase - Order.exePurchase - Order.exe

description pid process

Token: SeDebugPrivilege 4012 Purchase - Order.exe
Token: SeDebugPrivilege 2080 Purchase - Order.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Purchase - Order.exe

pid process

2080 Purchase - Order.exe

description	pid	process	target process
PID 4012 set thread context of 2080	4012	Purchase - Order.exe	Purchase - Order.exe

pid	process
2232	schtasks.exe

pid	process
4012	Purchase - Order.exe
2080	Purchase - Order.exe
2080	Purchase - Order.exe

description	pid	process
Token: SeDebugPrivilege	4012	Purchase - Order.exe
Token: SeDebugPrivilege	2080	Purchase - Order.exe

pid	process
2080	Purchase - Order.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

Purchase - Order.exe

description	pid	process	target process
PID 4012 wrote to memory of 2232	4012	Purchase - Order.exe	schtasks.exe
PID 4012 wrote to memory of 2232	4012	Purchase - Order.exe	schtasks.exe
PID 4012 wrote to memory of 2232	4012	Purchase - Order.exe	schtasks.exe
PID 4012 wrote to memory of 2080	4012	Purchase - Order.exe	Purchase - Order.exe
PID 4012 wrote to memory of 2080	4012	Purchase - Order.exe	Purchase - Order.exe
PID 4012 wrote to memory of 2080	4012	Purchase - Order.exe	Purchase - Order.exe
PID 4012 wrote to memory of 2080	4012	Purchase - Order.exe	Purchase - Order.exe
PID 4012 wrote to memory of 2080	4012	Purchase - Order.exe	Purchase - Order.exe
PID 4012 wrote to memory of 2080	4012	Purchase - Order.exe	Purchase - Order.exe
PID 4012 wrote to memory of 2080	4012	Purchase - Order.exe	Purchase - Order.exe
PID 4012 wrote to memory of 2080	4012	Purchase - Order.exe	Purchase - Order.exe

C:\Users\Admin\AppData\Local\Temp\Purchase - Order.exe
"C:\Users\Admin\AppData\Local\Temp\Purchase - Order.exe"
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4012

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\wzqcOpgNYsw" /XML "C:\Users\Admin\AppData\Local\Temp\tmpCD58.tmp"
2⤵
- Creates scheduled task(s)
PID:2232

C:\Users\Admin\AppData\Local\Temp\Purchase - Order.exe
"{path}"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:2080

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

Virtualization/Sandbox Evasion

2

T1497

Modify Registry

1

T1112

Credential Access

Credentials in Files

3

T1081

Discovery

Query Registry

4

T1012

Virtualization/Sandbox Evasion

2

T1497

System Information Discovery

3

T1082

Peripheral Device Discovery

1

T1120

Lateral Movement

Collection

Data from Local System

3

T1005

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Purchase - Order.exe.log
MD5
12557ab909651a6f99d3503d614d3562

SHA1
b86745768059a514bea3a438e1e96086af463246

SHA256
9589c869703e95d40d5870c60f66d8460f7914e9fe8dd579533c84148112babd

SHA512
10cdb2fa7cf054af937b4aeddfe16fe755d6b09db5a51f7052adbf472b4b435e16c141f3712762f3b67f990c3efcfa47659576988e321214c747d6cd98e75521

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpCD58.tmp
MD5
4a8139317affb783aaa122cf0b660878

SHA1
3d431a4bc0d3c9481e995d7c666b957e84cb1cf9

SHA256
b4f3bae01de0a360aab32f101c59a9f17693a38b6c6853b9cc782f5a9de1fa7c

SHA512
df8e0f4c4c97ec4fbf9585f7cd023c3129e62092260f7a48845717e2fd5291b09269edbc6b1ce117f65cbe3ec4d15e382efc8835991ebc8103f293cf0aecaa90

Download Submit
memory/2080-135-0x00000000059A0000-0x00000000059A1000-memory.dmp

Filesize
4KB

Download
memory/2080-134-0x0000000005510000-0x0000000005A0E000-memory.dmp

Filesize
5.0MB

Download
memory/2080-128-0x000000000043784E-mapping.dmp

Download
memory/2080-127-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2232-125-0x0000000000000000-mapping.dmp

Download
memory/4012-119-0x0000000005820000-0x0000000005D1E000-memory.dmp

Filesize
5.0MB

Download
memory/4012-123-0x0000000009120000-0x000000000915D000-memory.dmp

Filesize
244KB

Download
memory/4012-124-0x000000000E970000-0x000000000E971000-memory.dmp

Filesize
4KB

Download
memory/4012-122-0x00000000091A0000-0x0000000009222000-memory.dmp

Filesize
520KB

Download
memory/4012-121-0x00000000073C0000-0x00000000073C1000-memory.dmp

Filesize
4KB

Download
memory/4012-120-0x0000000005D10000-0x0000000005D12000-memory.dmp

Filesize
8KB

Download
memory/4012-114-0x0000000000FE0000-0x0000000000FE1000-memory.dmp

Filesize
4KB

Download
memory/4012-118-0x00000000058B0000-0x00000000058B1000-memory.dmp

Filesize
4KB

Download
memory/4012-117-0x00000000058C0000-0x00000000058C1000-memory.dmp

Filesize
4KB

Download
memory/4012-116-0x0000000005D20000-0x0000000005D21000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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