agenttesla | 4979759ed55defbed47edb7ae0bc894278225a8e2ecdac07733c712591326641

General

Target

emiratenbd_swift_mt103.exe
Size

671KB
MD5

01b5201376abbbc0296f96d9036fc563
SHA1

408eca35decfeaa6dad261b10819df717e111b89
SHA256

e71642990d5d7a50d9495bdc23ea33543fe7a27e33becd9ec7c021be2bb45494
SHA512

e09a6ecfaeb497550be869053348354be2682b92b104f95c5d722c7b4ea328d1ec49f4e59899de1a158f2d49a48e009a91bd42957994460cb97c8f988465bbae

Score

10^/10

agenttesla coreentity evasion keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.khokhwmeshmesh.com
Port:
587
Username:
hr@khokhwmeshmesh.com
Password:
hr@kmc1800066

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
behavioral1/memory/916-57-0x0000000000390000-0x0000000000398000-memory.dmp	coreentity

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/632-65-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/632-64-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/632-66-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/632-67-0x000000000044CE3E-mapping.dmp	family_agenttesla
behavioral1/memory/632-69-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/632-71-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla

Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

ReZer0 packer 1 IoCs

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

rezer0

Processes:

resource	yara_rule
behavioral1/memory/916-58-0x00000000054D0000-0x000000000552A000-memory.dmp	rezer0

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:

emiratenbd_swift_mt103.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	emiratenbd_swift_mt103.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	emiratenbd_swift_mt103.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:

emiratenbd_swift_mt103.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	emiratenbd_swift_mt103.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	emiratenbd_swift_mt103.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

emiratenbd_swift_mt103.exe

description pid process target process

PID 916 set thread context of 632 916 emiratenbd_swift_mt103.exe emiratenbd_swift_mt103.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

744 schtasks.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

emiratenbd_swift_mt103.exeemiratenbd_swift_mt103.exe

pid process

916 emiratenbd_swift_mt103.exe
632 emiratenbd_swift_mt103.exe
632 emiratenbd_swift_mt103.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

emiratenbd_swift_mt103.exeemiratenbd_swift_mt103.exe

description pid process

Token: SeDebugPrivilege 916 emiratenbd_swift_mt103.exe
Token: SeDebugPrivilege 632 emiratenbd_swift_mt103.exe

description	pid	process	target process
PID 916 set thread context of 632	916	emiratenbd_swift_mt103.exe	emiratenbd_swift_mt103.exe

pid	process
744	schtasks.exe

pid	process
916	emiratenbd_swift_mt103.exe
632	emiratenbd_swift_mt103.exe
632	emiratenbd_swift_mt103.exe

description	pid	process
Token: SeDebugPrivilege	916	emiratenbd_swift_mt103.exe
Token: SeDebugPrivilege	632	emiratenbd_swift_mt103.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

emiratenbd_swift_mt103.exe

description	pid	process	target process
PID 916 wrote to memory of 744	916	emiratenbd_swift_mt103.exe	schtasks.exe
PID 916 wrote to memory of 744	916	emiratenbd_swift_mt103.exe	schtasks.exe
PID 916 wrote to memory of 744	916	emiratenbd_swift_mt103.exe	schtasks.exe
PID 916 wrote to memory of 744	916	emiratenbd_swift_mt103.exe	schtasks.exe
PID 916 wrote to memory of 632	916	emiratenbd_swift_mt103.exe	emiratenbd_swift_mt103.exe
PID 916 wrote to memory of 632	916	emiratenbd_swift_mt103.exe	emiratenbd_swift_mt103.exe
PID 916 wrote to memory of 632	916	emiratenbd_swift_mt103.exe	emiratenbd_swift_mt103.exe
PID 916 wrote to memory of 632	916	emiratenbd_swift_mt103.exe	emiratenbd_swift_mt103.exe
PID 916 wrote to memory of 632	916	emiratenbd_swift_mt103.exe	emiratenbd_swift_mt103.exe
PID 916 wrote to memory of 632	916	emiratenbd_swift_mt103.exe	emiratenbd_swift_mt103.exe
PID 916 wrote to memory of 632	916	emiratenbd_swift_mt103.exe	emiratenbd_swift_mt103.exe
PID 916 wrote to memory of 632	916	emiratenbd_swift_mt103.exe	emiratenbd_swift_mt103.exe
PID 916 wrote to memory of 632	916	emiratenbd_swift_mt103.exe	emiratenbd_swift_mt103.exe

C:\Users\Admin\AppData\Local\Temp\emiratenbd_swift_mt103.exe
"C:\Users\Admin\AppData\Local\Temp\emiratenbd_swift_mt103.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:916

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\mYSfqBWV" /XML "C:\Users\Admin\AppData\Local\Temp\tmpFD15.tmp"
2⤵
- Creates scheduled task(s)
PID:744

C:\Users\Admin\AppData\Local\Temp\emiratenbd_swift_mt103.exe
"{path}"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:632

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

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Query Registry

4

T1012

Virtualization/Sandbox Evasion

2

T1497

System Information Discovery

3

T1082

Peripheral Device Discovery

1

T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpFD15.tmp
Filesize
1KB

MD5
37d28ada48e9384f8fe9a9ddb880eb0e

SHA1
500534b584ca15d04abe7e3c7586ab2588109719

SHA256
bb366852894cafe10364e9ac3bc1652a1199206b7a35a980518d202970c79a63

SHA512
0befb6f6e864e9a151f01ca8733d7ca400ed8782889db38260189320e9f7e3efede70f7328083a15c1b7d1d90fd8a1fd611247be1f8762fb014a1775fc6af212

Download Submit
memory/632-65-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/632-66-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/632-71-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/632-69-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/632-67-0x000000000044CE3E-mapping.dmp

Download
memory/632-64-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/632-61-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/632-62-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/744-59-0x0000000000000000-mapping.dmp

Download
memory/916-54-0x0000000000DC0000-0x0000000000E6E000-memory.dmp

Filesize
696KB

Download
memory/916-55-0x00000000004E0000-0x0000000000540000-memory.dmp

Filesize
384KB

Download
memory/916-56-0x0000000075DF1000-0x0000000075DF3000-memory.dmp

Filesize
8KB

Download
memory/916-58-0x00000000054D0000-0x000000000552A000-memory.dmp

Filesize
360KB

Download
memory/916-57-0x0000000000390000-0x0000000000398000-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