formbook | 5fca809996d591928d049265b97cf7a05a96a24eacb8c8d1d7b20b4d36dd4dd9

General

Target

PO 211208-0211A.exe
Size

1.0MB
MD5

4932a1d01ae69c90fa06963bfb368884
SHA1

8ffbda9ba7d5d81ca7ca3714ef84f272181192cd
SHA256

55d83cadb3eaa23b65912739a821a03a28186b5759528e1038a46c113db28614
SHA512

22d5b1470939ff871eefd1be57837af61beb5a9e59a6b5b156fb8067de377430b4419d90f593a72d6faffb4c9d09adf8081623f97cd7af8f5fe1a27173e87cf3
SSDEEP

24576:X3ddXRqVJYmmjuIgAUIMN3AkbNjegVn67zK86/hgI:7zuTge3z560mu8CeI

Score

10^/10

formbook kz21 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

kz21

Decoy

affordableshopper.com

federalpensioneducation.com

nguyenphuc.xyz

tbryantnotarysvcs.com

satgerv.online

yis.xyz

sailing-dreams.online

saairconditioners.com

compassioncommunity.net

vickyrubs.com

uniqueprorental.com

xplus-main.xyz

beforetravelthai.com

mentaltrainer.net

bianko.xyz

postsandnews.com

stream-king.com

citizen.guide

lasuiterennes.com

elektroexpress24.com

Signatures

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

Formbook payload 4 IoCs

rat

resource	yara_rule
behavioral2/memory/2868-12-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/2868-17-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/2868-21-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/3100-28-0x0000000000CA0000-0x0000000000CCF000-memory.dmp	formbook

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 1968 set thread context of 2868	1968	PO 211208-0211A.exe	92
PID 2868 set thread context of 3448	2868	PO 211208-0211A.exe	56
PID 2868 set thread context of 3448	2868	PO 211208-0211A.exe	56
PID 3100 set thread context of 3448	3100	svchost.exe	56

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	PO 211208-0211A.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 48 IoCs

pid	Process
1968	PO 211208-0211A.exe
1968	PO 211208-0211A.exe
2868	PO 211208-0211A.exe
2868	PO 211208-0211A.exe
2868	PO 211208-0211A.exe
2868	PO 211208-0211A.exe
2868	PO 211208-0211A.exe
2868	PO 211208-0211A.exe
3100	svchost.exe
3100	svchost.exe
3100	svchost.exe
3100	svchost.exe
3100	svchost.exe
3100	svchost.exe
3100	svchost.exe
3100	svchost.exe
3100	svchost.exe
3100	svchost.exe
3100	svchost.exe
3100	svchost.exe
3100	svchost.exe
3100	svchost.exe
3100	svchost.exe
3100	svchost.exe
3100	svchost.exe
3100	svchost.exe
3100	svchost.exe
3100	svchost.exe
3100	svchost.exe
3100	svchost.exe
3100	svchost.exe
3100	svchost.exe
3100	svchost.exe
3100	svchost.exe
3100	svchost.exe
3100	svchost.exe
3100	svchost.exe
3100	svchost.exe
3100	svchost.exe
3100	svchost.exe
3100	svchost.exe
3100	svchost.exe
3100	svchost.exe
3100	svchost.exe
3100	svchost.exe
3100	svchost.exe
3100	svchost.exe
3100	svchost.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2868	PO 211208-0211A.exe
2868	PO 211208-0211A.exe
2868	PO 211208-0211A.exe
2868	PO 211208-0211A.exe
3100	svchost.exe
3100	svchost.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1968	PO 211208-0211A.exe
Token: SeDebugPrivilege	2868	PO 211208-0211A.exe
Token: SeDebugPrivilege	3100	svchost.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1968 wrote to memory of 3184	1968	PO 211208-0211A.exe	91
PID 1968 wrote to memory of 3184	1968	PO 211208-0211A.exe	91
PID 1968 wrote to memory of 3184	1968	PO 211208-0211A.exe	91
PID 1968 wrote to memory of 2868	1968	PO 211208-0211A.exe	92
PID 1968 wrote to memory of 2868	1968	PO 211208-0211A.exe	92
PID 1968 wrote to memory of 2868	1968	PO 211208-0211A.exe	92
PID 1968 wrote to memory of 2868	1968	PO 211208-0211A.exe	92
PID 1968 wrote to memory of 2868	1968	PO 211208-0211A.exe	92
PID 1968 wrote to memory of 2868	1968	PO 211208-0211A.exe	92
PID 3448 wrote to memory of 3100	3448	Explorer.EXE	93
PID 3448 wrote to memory of 3100	3448	Explorer.EXE	93
PID 3448 wrote to memory of 3100	3448	Explorer.EXE	93
PID 3100 wrote to memory of 944	3100	svchost.exe	94
PID 3100 wrote to memory of 944	3100	svchost.exe	94
PID 3100 wrote to memory of 944	3100	svchost.exe	94

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:3448
- C:\Users\Admin\AppData\Local\Temp\PO 211208-0211A.exe
  "C:\Users\Admin\AppData\Local\Temp\PO 211208-0211A.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1968
- - C:\Users\Admin\AppData\Local\Temp\PO 211208-0211A.exe
    "C:\Users\Admin\AppData\Local\Temp\PO 211208-0211A.exe"
    3⤵
    PID:3184
- - C:\Users\Admin\AppData\Local\Temp\PO 211208-0211A.exe
    "C:\Users\Admin\AppData\Local\Temp\PO 211208-0211A.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2868
- C:\Windows\SysWOW64\svchost.exe
  "C:\Windows\SysWOW64\svchost.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3100
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\PO 211208-0211A.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:944

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1968-14-0x0000000075060000-0x0000000075810000-memory.dmp

Filesize
7.7MB

Download
memory/1968-1-0x0000000000D40000-0x0000000000E48000-memory.dmp

Filesize
1.0MB

Download
memory/1968-2-0x0000000005E90000-0x0000000006434000-memory.dmp

Filesize
5.6MB

Download
memory/1968-3-0x00000000058E0000-0x0000000005972000-memory.dmp

Filesize
584KB

Download
memory/1968-4-0x0000000075060000-0x0000000075810000-memory.dmp

Filesize
7.7MB

Download
memory/1968-5-0x0000000005840000-0x000000000584A000-memory.dmp

Filesize
40KB

Download
memory/1968-6-0x0000000008210000-0x000000000821E000-memory.dmp

Filesize
56KB

Download
memory/1968-7-0x0000000008220000-0x000000000826C000-memory.dmp

Filesize
304KB

Download
memory/1968-8-0x000000007506E000-0x000000007506F000-memory.dmp

Filesize
4KB

Download
memory/1968-9-0x0000000075060000-0x0000000075810000-memory.dmp

Filesize
7.7MB

Download
memory/1968-10-0x00000000085B0000-0x000000000864C000-memory.dmp

Filesize
624KB

Download
memory/1968-11-0x0000000008750000-0x0000000008876000-memory.dmp

Filesize
1.1MB

Download
memory/1968-0-0x000000007506E000-0x000000007506F000-memory.dmp

Filesize
4KB

Download
memory/2868-15-0x00000000017A0000-0x0000000001AEA000-memory.dmp

Filesize
3.3MB

Download
memory/2868-21-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2868-18-0x00000000016F0000-0x0000000001705000-memory.dmp

Filesize
84KB

Download
memory/2868-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2868-17-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2868-22-0x0000000001770000-0x0000000001785000-memory.dmp

Filesize
84KB

Download
memory/3100-25-0x0000000000970000-0x000000000097E000-memory.dmp

Filesize
56KB

Download
memory/3100-27-0x0000000000970000-0x000000000097E000-memory.dmp

Filesize
56KB

Download
memory/3100-28-0x0000000000CA0000-0x0000000000CCF000-memory.dmp

Filesize
188KB

Download
memory/3448-23-0x0000000008620000-0x00000000086F2000-memory.dmp

Filesize
840KB

Download
memory/3448-19-0x0000000008D00000-0x0000000008E88000-memory.dmp

Filesize
1.5MB

Download
memory/3448-24-0x0000000008D00000-0x0000000008E88000-memory.dmp

Filesize
1.5MB

Download
memory/3448-29-0x0000000008620000-0x00000000086F2000-memory.dmp

Filesize
840KB

Download
memory/3448-32-0x0000000003090000-0x000000000312F000-memory.dmp

Filesize
636KB

Download
memory/3448-34-0x0000000003090000-0x000000000312F000-memory.dmp

Filesize
636KB

Download
memory/3448-35-0x0000000003090000-0x000000000312F000-memory.dmp

Filesize
636KB

Download

Analysis

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