formbook | 29fe01db6dea93e7ea23988d78444e838ff8ca2b56f406844cb0aa2d31b2563d

General

Target

PROJECT FEJ-1601.exe
Size

394KB
MD5

212f0a0a7237ab09c82f6153361ac1b0
SHA1

1b84fff6041a1700f34c80a6e737e8e8c80d5770
SHA256

40bec545f9b01c4438a75cb03d902cc70c65ce8ecf90ecb1fb88aeb00b2c92cc
SHA512

232d6573a5801af940f13f97adae7f6d7a7cd38a3b61b190437f666387508db5668df77db980de3b911e2dab806587f9a486ccab5887a50f27efabb538ade348
SSDEEP

12288:U1zgVlrWHFZED24Ug/Q50b4Qhw+hjcnUgtICxs3IEeC:U1zgVlrWHwi4+5Y4WzhjcnUgXpE

Score

10^/10

formbook ykj discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

ykj

Decoy

polovnitelefoni.net

cateless.com

newbeginnings.club

quanghoagroup.com

pcbet0.com

normal.computer

yoinkyoink.com

lahorekabob.com

charnal-voices.com

hotsleepspot.com

thekashmirfabrics.com

upholsteryormondbeach.com

caramel-lefilm.com

pkitales.com

truancyclub.com

susanmathason.com

sweetlimenail.com

vaaudiotechnic.site

edem-agency.com

rakkonoteineinakurashi.com

Signatures

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

Formbook payload 3 IoCs

rat

resource	yara_rule
behavioral1/memory/2560-13-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/2560-17-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/2560-21-0x0000000000400000-0x000000000042E000-memory.dmp	formbook

Deletes itself 1 IoCs

pid	Process
300	cmd.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2444 set thread context of 2560	2444	PROJECT FEJ-1601.exe	30
PID 2560 set thread context of 1192	2560	PROJECT FEJ-1601.exe	21
PID 2560 set thread context of 1192	2560	PROJECT FEJ-1601.exe	21
PID 1676 set thread context of 1192	1676	msdt.exe	21

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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PROJECT FEJ-1601.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdt.exe

Suspicious behavior: EnumeratesProcesses 18 IoCs

pid	Process
2560	PROJECT FEJ-1601.exe
2560	PROJECT FEJ-1601.exe
2560	PROJECT FEJ-1601.exe
1676	msdt.exe
1676	msdt.exe
1676	msdt.exe
1676	msdt.exe
1676	msdt.exe
1676	msdt.exe
1676	msdt.exe
1676	msdt.exe
1676	msdt.exe
1676	msdt.exe
1676	msdt.exe
1676	msdt.exe
1676	msdt.exe
1676	msdt.exe
1676	msdt.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2560	PROJECT FEJ-1601.exe
2560	PROJECT FEJ-1601.exe
2560	PROJECT FEJ-1601.exe
2560	PROJECT FEJ-1601.exe
1676	msdt.exe
1676	msdt.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2560	PROJECT FEJ-1601.exe
Token: SeDebugPrivilege	1676	msdt.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2444 wrote to memory of 2560	2444	PROJECT FEJ-1601.exe	30
PID 2444 wrote to memory of 2560	2444	PROJECT FEJ-1601.exe	30
PID 2444 wrote to memory of 2560	2444	PROJECT FEJ-1601.exe	30
PID 2444 wrote to memory of 2560	2444	PROJECT FEJ-1601.exe	30
PID 2444 wrote to memory of 2560	2444	PROJECT FEJ-1601.exe	30
PID 2444 wrote to memory of 2560	2444	PROJECT FEJ-1601.exe	30
PID 2444 wrote to memory of 2560	2444	PROJECT FEJ-1601.exe	30
PID 1192 wrote to memory of 1676	1192	Explorer.EXE	31
PID 1192 wrote to memory of 1676	1192	Explorer.EXE	31
PID 1192 wrote to memory of 1676	1192	Explorer.EXE	31
PID 1192 wrote to memory of 1676	1192	Explorer.EXE	31
PID 1676 wrote to memory of 300	1676	msdt.exe	32
PID 1676 wrote to memory of 300	1676	msdt.exe	32
PID 1676 wrote to memory of 300	1676	msdt.exe	32
PID 1676 wrote to memory of 300	1676	msdt.exe	32

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1192
- C:\Users\Admin\AppData\Local\Temp\PROJECT FEJ-1601.exe
  "C:\Users\Admin\AppData\Local\Temp\PROJECT FEJ-1601.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2444
- - C:\Users\Admin\AppData\Local\Temp\PROJECT FEJ-1601.exe
    "C:\Users\Admin\AppData\Local\Temp\PROJECT FEJ-1601.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2560
- C:\Windows\SysWOW64\msdt.exe
  "C:\Windows\SysWOW64\msdt.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:1676
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\PROJECT FEJ-1601.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:300

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/1192-19-0x0000000005110000-0x0000000005272000-memory.dmp

Filesize
1.4MB

Download
memory/1192-28-0x00000000046B0000-0x0000000004786000-memory.dmp

Filesize
856KB

Download
memory/1192-23-0x0000000005110000-0x0000000005272000-memory.dmp

Filesize
1.4MB

Download
memory/1192-24-0x00000000046B0000-0x0000000004786000-memory.dmp

Filesize
856KB

Download
memory/1676-27-0x00000000005D0000-0x00000000006C4000-memory.dmp

Filesize
976KB

Download
memory/1676-25-0x00000000005D0000-0x00000000006C4000-memory.dmp

Filesize
976KB

Download
memory/2444-5-0x0000000074D10000-0x00000000753FE000-memory.dmp

Filesize
6.9MB

Download
memory/2444-6-0x00000000053C0000-0x0000000005422000-memory.dmp

Filesize
392KB

Download
memory/2444-1-0x0000000000DC0000-0x0000000000E28000-memory.dmp

Filesize
416KB

Download
memory/2444-2-0x0000000074D10000-0x00000000753FE000-memory.dmp

Filesize
6.9MB

Download
memory/2444-3-0x00000000004B0000-0x00000000004BA000-memory.dmp

Filesize
40KB

Download
memory/2444-14-0x0000000074D10000-0x00000000753FE000-memory.dmp

Filesize
6.9MB

Download
memory/2444-4-0x0000000074D1E000-0x0000000074D1F000-memory.dmp

Filesize
4KB

Download
memory/2444-0-0x0000000074D1E000-0x0000000074D1F000-memory.dmp

Filesize
4KB

Download
memory/2560-17-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2560-8-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2560-18-0x0000000000190000-0x00000000001A4000-memory.dmp

Filesize
80KB

Download
memory/2560-22-0x0000000000230000-0x0000000000244000-memory.dmp

Filesize
80KB

Download
memory/2560-21-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2560-15-0x00000000009E0000-0x0000000000CE3000-memory.dmp

Filesize
3.0MB

Download
memory/2560-9-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2560-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2560-13-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download

Analysis

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