agenttesla | 09bcaddf5bcdfbacea531402e71416310a536840af3b8318d9b533a621ad9121

General

Target

MT PEARL - T.PDF.js
Size

5.8MB
MD5

07d87f8a2836402d7d6d121b4ac64850
SHA1

2643de7c438bd735d4730a40444fd41c2eca6712
SHA256

d65d4a47bce8ac5360c92d4be30d043207c6d6d39b9b2709bf37b9b23a7b5835
SHA512

5dc8a13c2235ba5496f95be0310e38b4498fe3113cd7534cd6c18dd52176fcf36a31944a5822a2962624d8ae0e0f9930ca0ea2a5a3531c823ab7eaf16e0ca966
SSDEEP

24576:2nZ2HSB9a3Z6opVwL2EnWfPyAIbjnwYh88Y/tIT0L66ZTF8hi/tbUDfkPwcAeZQw:Ea5

Score

10^/10

agenttesla vjw0rm keylogger spyware stealer trojan worm

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot6811423600:AAG2aeIaNsb7KhtKp1Js71i-PwGY1zN7uIg/

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
trojan worm vjw0rm

Blocklisted process makes network request 15 IoCs

flow	pid	Process
20	3148	wscript.exe
25	3148	wscript.exe
33	3148	wscript.exe
40	3148	wscript.exe
41	3148	wscript.exe
42	3148	wscript.exe
49	3148	wscript.exe
51	3148	wscript.exe
52	3148	wscript.exe
55	3148	wscript.exe
56	3148	wscript.exe
57	3148	wscript.exe
58	3148	wscript.exe
59	3148	wscript.exe
60	3148	wscript.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1873812795-1433807462-1429862679-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\zuOeofjXeJ.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\zuOeofjXeJ.js	wscript.exe

Executes dropped EXE 1 IoCs

pid	Process
4356	aaad.exe

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
T1552.001
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
T1552.001
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4356	aaad.exe
4356	aaad.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4356	aaad.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2288 wrote to memory of 3148	2288	wscript.exe	93
PID 2288 wrote to memory of 3148	2288	wscript.exe	93
PID 2288 wrote to memory of 4356	2288	wscript.exe	94
PID 2288 wrote to memory of 4356	2288	wscript.exe	94
PID 2288 wrote to memory of 4356	2288	wscript.exe	94

C:\Windows\system32\wscript.exe
wscript.exe "C:\Users\Admin\AppData\Local\Temp\MT PEARL - T.PDF.js"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2288
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\zuOeofjXeJ.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  PID:3148
- C:\Users\Admin\AppData\Local\Temp\aaad.exe
  "C:\Users\Admin\AppData\Local\Temp\aaad.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4356

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\aaad.exe

Filesize
234KB

MD5
6c6cee666da17c0043661cf2a0c56d6a

SHA1
9ca21a88e917d235b4fd923bc0bc8208af8c30ec

SHA256
25a4772b405adb2585dc19e528156f6907ce3f539d0bc85827419f93c320f5cc

SHA512
8bc9edfcc329b539dfce4490d2b7974b92517661caeb34cc16c941497cda982232db29f69714452ecda2614c9c669a31e7a9866c1619a0f4df5663eaa8daa335

Download Submit
C:\Users\Admin\AppData\Local\Temp\aaad.exe

Filesize
234KB

MD5
6c6cee666da17c0043661cf2a0c56d6a

SHA1
9ca21a88e917d235b4fd923bc0bc8208af8c30ec

SHA256
25a4772b405adb2585dc19e528156f6907ce3f539d0bc85827419f93c320f5cc

SHA512
8bc9edfcc329b539dfce4490d2b7974b92517661caeb34cc16c941497cda982232db29f69714452ecda2614c9c669a31e7a9866c1619a0f4df5663eaa8daa335

Download Submit
C:\Users\Admin\AppData\Local\Temp\aaad.exe

Filesize
234KB

MD5
6c6cee666da17c0043661cf2a0c56d6a

SHA1
9ca21a88e917d235b4fd923bc0bc8208af8c30ec

SHA256
25a4772b405adb2585dc19e528156f6907ce3f539d0bc85827419f93c320f5cc

SHA512
8bc9edfcc329b539dfce4490d2b7974b92517661caeb34cc16c941497cda982232db29f69714452ecda2614c9c669a31e7a9866c1619a0f4df5663eaa8daa335

Download Submit
C:\Users\Admin\AppData\Roaming\zuOeofjXeJ.js

Filesize
346KB

MD5
e8d8eeb4b2b4494f257c2aeeaf39de6d

SHA1
132b82b68c1120490447ee12f63817954c00bda2

SHA256
37361c480ae887fab7a0a8d45caa9afb4dcd6153ae6ef2671ac96608cddf85ee

SHA512
863e3d2f1d06fcd408402c3e7eb7cc35e18be9f46470919bd22cbd4e7292763a5d51ba8de6eba665dfc80ba227ecda62b6e8206b4c9c6d221d40f9f8a1cca85d

Download Submit
memory/4356-16-0x0000000005620000-0x0000000005BC4000-memory.dmp

Filesize
5.6MB

Download
memory/4356-15-0x0000000000620000-0x0000000000660000-memory.dmp

Filesize
256KB

Download
memory/4356-14-0x0000000074AA0000-0x0000000075250000-memory.dmp

Filesize
7.7MB

Download
memory/4356-17-0x0000000004F60000-0x0000000004F70000-memory.dmp

Filesize
64KB

Download
memory/4356-18-0x0000000005170000-0x00000000051D6000-memory.dmp

Filesize
408KB

Download
memory/4356-19-0x0000000005E20000-0x0000000005E70000-memory.dmp

Filesize
320KB

Download
memory/4356-20-0x0000000005F10000-0x0000000005FAC000-memory.dmp

Filesize
624KB

Download
memory/4356-21-0x0000000006990000-0x0000000006A22000-memory.dmp

Filesize
584KB

Download
memory/4356-22-0x0000000006930000-0x000000000693A000-memory.dmp

Filesize
40KB

Download
memory/4356-23-0x0000000074AA0000-0x0000000075250000-memory.dmp

Filesize
7.7MB

Download
memory/4356-24-0x0000000004F60000-0x0000000004F70000-memory.dmp

Filesize
64KB

Download

Analysis

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