formbook | 642b9c5034924c5b8f5059c884fb661c6f276135b5a373a77335d1c9c5fecfd6

General

Target

8aaf453b110fa7065e947c3ce62adba79a22b32894a5779bc2aa9cfd87d6df1c.js
Size

895KB
MD5

eaa0d0183335da6eaee3680ec0f11209
SHA1

d6506fa84779f2fb61b86a68c948f44f5abbee12
SHA256

8aaf453b110fa7065e947c3ce62adba79a22b32894a5779bc2aa9cfd87d6df1c
SHA512

61af0c623e36894abbfc6ed557c3a51d851c82273dbefeb186ee677b6eb5a800206500c27abbdaeea047119cf009e7c368c041bac4e98e06b51da09820c0f113
SSDEEP

12288:vxykgiEyf9c7MWYdDBYSv+FBkUQExkZ1DF+yNgeW/lWtFB4a:jEMc7MWiAu/J8Wma

Score

10^/10

formbook vjw0rm ermr persistence rat spyware stealer trojan worm

Malware Config

Extracted

Family

formbook

Campaign

ermr

Decoy

ErOK6LFCgNIAlQmH54oaYOL/CN29Z78=

qNSdDhu/PT/1fgafDagiCSZH1SY=

wLpPOAkYS8EABl3pHGc4hNT/Q1sHBrU=

jSxRvptHkeTGl7PT0SEmaZmjqzanuA==

b91oL+2wCcpyhnd6yvF6Pg==

mr81yp1/qqZX

hy7Xsz/PU/LWHMcGL4UYJx9n3A==

KlwrHt1gouPaXaWhoQ==

ng8M320IRJL9Ptw=

8GQbOXuaWxvKnNM=

XndOL7E5sNpVUNty4d/a

rryPBBC8PybYb+2h2MF3FHGL

kEoeyERSVCYO0g==

5/P+SBDby5hO

1fYXc30/h9W7iO17

34X+YKR+wRFE

8ir/X2MlVByh5lQ1ow8=

u9ikm2UMZ7J7hpCYow==

FLI+c3clp1BNDjVAfvC2Dnw=

t21Erq8/r09wAzAJTAH3Ng==

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
trojan worm vjw0rm

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	mstsc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\JHLTQVAHYJP = "C:\\Program Files (x86)\\Hax4duxp\\regsvctnz.exe"	mstsc.exe

Blocklisted process makes network request 5 IoCs

flow	pid	Process
4	268	wscript.exe
10	268	wscript.exe
16	268	wscript.exe
27	268	wscript.exe
37	268	wscript.exe

Executes dropped EXE 1 IoCs

pid	Process
696	bin (1).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-1-5-21-3385717845-2518323428-350143044-1000\Control Panel\International\Geo\Nation	bin (1).exe

Drops startup file 2 IoCs

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

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 696 set thread context of 1284	696	bin (1).exe	14
PID 1404 set thread context of 1284	1404	mstsc.exe	14

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Hax4duxp\regsvctnz.exe	mstsc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-3385717845-2518323428-350143044-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	mstsc.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
696	bin (1).exe
696	bin (1).exe
696	bin (1).exe
696	bin (1).exe
1404	mstsc.exe
1404	mstsc.exe
1404	mstsc.exe
1404	mstsc.exe
1404	mstsc.exe
1404	mstsc.exe
1404	mstsc.exe
1404	mstsc.exe
1404	mstsc.exe
1404	mstsc.exe
1404	mstsc.exe
1404	mstsc.exe
1404	mstsc.exe
1404	mstsc.exe
1404	mstsc.exe
1404	mstsc.exe
1404	mstsc.exe
1404	mstsc.exe
1404	mstsc.exe
1404	mstsc.exe
1404	mstsc.exe
1404	mstsc.exe
1404	mstsc.exe
1404	mstsc.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1284	Explorer.EXE

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
696	bin (1).exe
696	bin (1).exe
696	bin (1).exe
1404	mstsc.exe
1404	mstsc.exe
1404	mstsc.exe
1404	mstsc.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	696	bin (1).exe
Token: SeDebugPrivilege	1404	mstsc.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1284	Explorer.EXE
1284	Explorer.EXE

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
1284	Explorer.EXE
1284	Explorer.EXE

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1232 wrote to memory of 268	1232	wscript.exe	28
PID 1232 wrote to memory of 268	1232	wscript.exe	28
PID 1232 wrote to memory of 268	1232	wscript.exe	28
PID 1232 wrote to memory of 696	1232	wscript.exe	29
PID 1232 wrote to memory of 696	1232	wscript.exe	29
PID 1232 wrote to memory of 696	1232	wscript.exe	29
PID 1232 wrote to memory of 696	1232	wscript.exe	29
PID 1284 wrote to memory of 1404	1284	Explorer.EXE	31
PID 1284 wrote to memory of 1404	1284	Explorer.EXE	31
PID 1284 wrote to memory of 1404	1284	Explorer.EXE	31
PID 1284 wrote to memory of 1404	1284	Explorer.EXE	31
PID 1404 wrote to memory of 932	1404	mstsc.exe	32
PID 1404 wrote to memory of 932	1404	mstsc.exe	32
PID 1404 wrote to memory of 932	1404	mstsc.exe	32
PID 1404 wrote to memory of 932	1404	mstsc.exe	32
PID 1404 wrote to memory of 1540	1404	mstsc.exe	39
PID 1404 wrote to memory of 1540	1404	mstsc.exe	39
PID 1404 wrote to memory of 1540	1404	mstsc.exe	39
PID 1404 wrote to memory of 1540	1404	mstsc.exe	39
PID 1404 wrote to memory of 1540	1404	mstsc.exe	39

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\8aaf453b110fa7065e947c3ce62adba79a22b32894a5779bc2aa9cfd87d6df1c.js
1⤵
- Suspicious use of WriteProcessMemory
PID:1232
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\yTZPnpkRug.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  PID:268
- C:\Users\Admin\AppData\Roaming\bin (1).exe
  "C:\Users\Admin\AppData\Roaming\bin (1).exe"
  2⤵
  - Executes dropped EXE
  - Checks computer location settings
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  PID:696

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1284
- C:\Windows\SysWOW64\mstsc.exe
  "C:\Windows\SysWOW64\mstsc.exe"
  2⤵
  - Adds policy Run key to start application
  - Suspicious use of SetThreadContext
  - Drops file in Program Files directory
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1404
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Roaming\bin (1).exe"
    3⤵
    PID:932
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:1540

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\bin (1).exe

Filesize
177KB

MD5
847f96edff4362a11a17a55a0f777394

SHA1
213b8bd653acaf9749af503b936fde0d9effdff4

SHA256
b7f9d8c856f2a427668235d49710a8ac3caa7bcaf5e317a064205127df431061

SHA512
6aed480e2aca2414e47d44e87ddce59da4809de9629c5fbc9c3e3bd1665a173efec1f13a3275d95ffcc63394b854caf9d2cd7e80af2868a08d0f8885b5470227

Download Submit
C:\Users\Admin\AppData\Roaming\bin (1).exe

Filesize
177KB

MD5
847f96edff4362a11a17a55a0f777394

SHA1
213b8bd653acaf9749af503b936fde0d9effdff4

SHA256
b7f9d8c856f2a427668235d49710a8ac3caa7bcaf5e317a064205127df431061

SHA512
6aed480e2aca2414e47d44e87ddce59da4809de9629c5fbc9c3e3bd1665a173efec1f13a3275d95ffcc63394b854caf9d2cd7e80af2868a08d0f8885b5470227

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

Filesize
209KB

MD5
064f1a08c036eb1139a3b01dc9e7344d

SHA1
44f0ce52b38f668f281bd1fccda99ab30dd8f64e

SHA256
76322e9fbff15a55646f3c46d18f82d767200458af540c5cf5b9bad70e073601

SHA512
0da621f99e7d5eea18aaeb08248c431855151a1092678608662efe3289653436b3491d1f67159125a8ffaa9cad904a91e8962d6e00099ca5fe116b8ea08ba788

Download Submit
memory/696-60-0x0000000000860000-0x0000000000B63000-memory.dmp

Filesize
3.0MB

Download
memory/696-61-0x0000000000170000-0x0000000000181000-memory.dmp

Filesize
68KB

Download
memory/1232-54-0x000007FEFC2E1000-0x000007FEFC2E3000-memory.dmp

Filesize
8KB

Download
memory/1284-62-0x00000000061E0000-0x0000000006334000-memory.dmp

Filesize
1.3MB

Download
memory/1284-73-0x0000000003AB0000-0x0000000003B4D000-memory.dmp

Filesize
628KB

Download
memory/1284-71-0x0000000003AB0000-0x0000000003B4D000-memory.dmp

Filesize
628KB

Download
memory/1404-66-0x0000000000080000-0x00000000000AD000-memory.dmp

Filesize
180KB

Download
memory/1404-65-0x0000000000E90000-0x0000000000F94000-memory.dmp

Filesize
1.0MB

Download
memory/1404-69-0x0000000000B50000-0x0000000000E53000-memory.dmp

Filesize
3.0MB

Download
memory/1404-70-0x0000000000910000-0x00000000009A0000-memory.dmp

Filesize
576KB

Download
memory/1404-64-0x00000000760B1000-0x00000000760B3000-memory.dmp

Filesize
8KB

Download
memory/1404-72-0x0000000000080000-0x00000000000AD000-memory.dmp

Filesize
180KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads