formbook | c162a926bc48d37970c76d3ae7afcb32881f8af7c2110b5dadcf6157c1ab3012

Analysis

max time kernel
93s
max time network
102s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
03/08/2024, 09:54

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General

Target

821b0a63cb6261b46c7e269f35279510N.exe
Size

621KB
MD5

821b0a63cb6261b46c7e269f35279510
SHA1

04b02753ecdce9c5a1b49a06fffa17a88398b1af
SHA256

c162a926bc48d37970c76d3ae7afcb32881f8af7c2110b5dadcf6157c1ab3012
SHA512

854026466fa1f54041ab3f5e15ff00bad98370c13bf54965d171e8eab326fdddfe8717f9d44efcf5cabf691e5782465dbea2a7531c2d74f07c2c23e2ec03b818
SSDEEP

12288:m4Ox8GgReg2DlocqHPOK9pMSzFDOct8FwVxBa6QhmaTpr5Lka0KVjndCWkR:mdx8XR12uLvOKdzFZ8FwD86Spr5Lh/Vg

Score

10^/10

formbook ss24 discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

ss24

Decoy

agingwellhc.com

unikbetanggur.autos

eb2024yl.top

ja380.xyz

thehalcyon.studio

maudsoogrim.com

esteler10.click

mewtcp.xyz

www-zjbf1.club

kucinglucu.online

lunwencheck.com

65597.photos

erbxeu358h.top

startable.online

yousend.xyz

csharksg.com

centricoatings.com

ntruhslearn.xyz

achabakra.xyz

zuntool.com

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook

Formbook payload 1 IoCs

rat

resource	yara_rule
behavioral2/memory/1704-22-0x0000000000400000-0x000000000042F000-memory.dmp	formbook

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
4548	powershell.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-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	821b0a63cb6261b46c7e269f35279510N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4936 set thread context of 1704	4936	821b0a63cb6261b46c7e269f35279510N.exe	89

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	821b0a63cb6261b46c7e269f35279510N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
1592	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4548	powershell.exe
1704	821b0a63cb6261b46c7e269f35279510N.exe
1704	821b0a63cb6261b46c7e269f35279510N.exe
4548	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4548	powershell.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4936 wrote to memory of 4548	4936	821b0a63cb6261b46c7e269f35279510N.exe	85
PID 4936 wrote to memory of 4548	4936	821b0a63cb6261b46c7e269f35279510N.exe	85
PID 4936 wrote to memory of 4548	4936	821b0a63cb6261b46c7e269f35279510N.exe	85
PID 4936 wrote to memory of 1592	4936	821b0a63cb6261b46c7e269f35279510N.exe	87
PID 4936 wrote to memory of 1592	4936	821b0a63cb6261b46c7e269f35279510N.exe	87
PID 4936 wrote to memory of 1592	4936	821b0a63cb6261b46c7e269f35279510N.exe	87
PID 4936 wrote to memory of 1704	4936	821b0a63cb6261b46c7e269f35279510N.exe	89
PID 4936 wrote to memory of 1704	4936	821b0a63cb6261b46c7e269f35279510N.exe	89
PID 4936 wrote to memory of 1704	4936	821b0a63cb6261b46c7e269f35279510N.exe	89
PID 4936 wrote to memory of 1704	4936	821b0a63cb6261b46c7e269f35279510N.exe	89
PID 4936 wrote to memory of 1704	4936	821b0a63cb6261b46c7e269f35279510N.exe	89
PID 4936 wrote to memory of 1704	4936	821b0a63cb6261b46c7e269f35279510N.exe	89

C:\Users\Admin\AppData\Local\Temp\821b0a63cb6261b46c7e269f35279510N.exe
"C:\Users\Admin\AppData\Local\Temp\821b0a63cb6261b46c7e269f35279510N.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4936
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\lmiGgFdjxkEHAd.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4548
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\lmiGgFdjxkEHAd" /XML "C:\Users\Admin\AppData\Local\Temp\tmp50C.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:1592
- C:\Users\Admin\AppData\Local\Temp\821b0a63cb6261b46c7e269f35279510N.exe
  "C:\Users\Admin\AppData\Local\Temp\821b0a63cb6261b46c7e269f35279510N.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:1704

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_iewathxi.oxl.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp50C.tmp

Filesize
1KB

MD5
970143db69be9e49110ef6f6ecf664be

SHA1
153f60652a0b5ec80ce7796eb73f1a5f164b926b

SHA256
e63674d716c58fdd6341eb69fde90ea124cad061a00e9d30cde5ca70a4cd2a9c

SHA512
376df78ff0345cb342c7e7b39df1c3ce37eb63c71fea8e6b6d7d2c0801b00672699d0b3cc37108358bd6f678ef0de6de6fddd4569c218c1a4edbd55f04da2788

Download Submit
memory/1704-37-0x0000000001080000-0x00000000013CA000-memory.dmp

Filesize
3.3MB

Download
memory/1704-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4548-14-0x0000000002110000-0x0000000002146000-memory.dmp

Filesize
216KB

Download
memory/4548-36-0x0000000005A20000-0x0000000005A3E000-memory.dmp

Filesize
120KB

Download
memory/4548-64-0x0000000074A60000-0x0000000075210000-memory.dmp

Filesize
7.7MB

Download
memory/4548-62-0x0000000007060000-0x0000000007068000-memory.dmp

Filesize
32KB

Download
memory/4548-61-0x0000000007080000-0x000000000709A000-memory.dmp

Filesize
104KB

Download
memory/4548-60-0x0000000006F80000-0x0000000006F94000-memory.dmp

Filesize
80KB

Download
memory/4548-59-0x0000000006F70000-0x0000000006F7E000-memory.dmp

Filesize
56KB

Download
memory/4548-58-0x0000000006F40000-0x0000000006F51000-memory.dmp

Filesize
68KB

Download
memory/4548-16-0x0000000004C80000-0x00000000052A8000-memory.dmp

Filesize
6.2MB

Download
memory/4548-57-0x0000000006FC0000-0x0000000007056000-memory.dmp

Filesize
600KB

Download
memory/4548-18-0x0000000004A60000-0x0000000004A82000-memory.dmp

Filesize
136KB

Download
memory/4548-20-0x00000000052B0000-0x0000000005316000-memory.dmp

Filesize
408KB

Download
memory/4548-19-0x0000000004B00000-0x0000000004B66000-memory.dmp

Filesize
408KB

Download
memory/4548-56-0x0000000006DB0000-0x0000000006DBA000-memory.dmp

Filesize
40KB

Download
memory/4548-21-0x0000000074A60000-0x0000000075210000-memory.dmp

Filesize
7.7MB

Download
memory/4548-25-0x0000000005420000-0x0000000005774000-memory.dmp

Filesize
3.3MB

Download
memory/4548-55-0x0000000006D40000-0x0000000006D5A000-memory.dmp

Filesize
104KB

Download
memory/4548-24-0x0000000074A60000-0x0000000075210000-memory.dmp

Filesize
7.7MB

Download
memory/4548-54-0x00000000073C0000-0x0000000007A3A000-memory.dmp

Filesize
6.5MB

Download
memory/4548-53-0x0000000006C90000-0x0000000006D33000-memory.dmp

Filesize
652KB

Download
memory/4548-17-0x0000000074A60000-0x0000000075210000-memory.dmp

Filesize
7.7MB

Download
memory/4548-38-0x0000000005F70000-0x0000000005FBC000-memory.dmp

Filesize
304KB

Download
memory/4548-39-0x000000007F8B0000-0x000000007F8C0000-memory.dmp

Filesize
64KB

Download
memory/4548-40-0x0000000006A50000-0x0000000006A82000-memory.dmp

Filesize
200KB

Download
memory/4548-41-0x00000000752F0000-0x000000007533C000-memory.dmp

Filesize
304KB

Download
memory/4548-52-0x0000000002150000-0x0000000002160000-memory.dmp

Filesize
64KB

Download
memory/4548-51-0x0000000005FC0000-0x0000000005FDE000-memory.dmp

Filesize
120KB

Download
memory/4936-35-0x0000000074A60000-0x0000000075210000-memory.dmp

Filesize
7.7MB

Download
memory/4936-5-0x0000000074A60000-0x0000000075210000-memory.dmp

Filesize
7.7MB

Download
memory/4936-2-0x00000000059E0000-0x0000000005F84000-memory.dmp

Filesize
5.6MB

Download
memory/4936-3-0x00000000054D0000-0x0000000005562000-memory.dmp

Filesize
584KB

Download
memory/4936-1-0x0000000000A20000-0x0000000000ABE000-memory.dmp

Filesize
632KB

Download
memory/4936-4-0x0000000005660000-0x000000000566A000-memory.dmp

Filesize
40KB

Download
memory/4936-0-0x0000000074A6E000-0x0000000074A6F000-memory.dmp

Filesize
4KB

Download
memory/4936-9-0x0000000008D50000-0x0000000008DEC000-memory.dmp

Filesize
624KB

Download
memory/4936-8-0x0000000008A80000-0x0000000008AF6000-memory.dmp

Filesize
472KB

Download
memory/4936-7-0x0000000008A60000-0x0000000008A6E000-memory.dmp

Filesize
56KB

Download
memory/4936-6-0x00000000059B0000-0x00000000059C6000-memory.dmp

Filesize
88KB

Download