formbook | ec45ebce734d9a8be961529c08e9de4b192ffd26ea3c2fb76aaf2a1b61e01146

Analysis

max time kernel
149s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20230915-en
resource tags

arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
submitted
12-10-2023 12:09

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General

Target

Sipariş 5035.exe
Size

330KB
MD5

38b08db0e93a868942dbdbf2d48fca7e
SHA1

2c70b7fed8ac61f0457dc7a0b16d16d240e4cf93
SHA256

ec45ebce734d9a8be961529c08e9de4b192ffd26ea3c2fb76aaf2a1b61e01146
SHA512

c8c6c45b80f801ae64195ae259df498367ac576ed369fd85620fad8af0f1ff09cf09ba0efb433bf65d105b25a2a2052bf4925c7a5d36ea9536a8dd97513995ed
SSDEEP

6144:/Ya6Ci59VF5Ch4HhaOtcRVEUvvYtmE9QmROYXJQN+sQIB9GvCjvta:/Yci59VLCZOtaVTSmXGrJQNYMUC0

Score

10^/10

formbook k13s rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

k13s

Decoy

runbe.fun

factrip.com

zalenterprises.net

yoyufoods.com

soniakmahajan.com

jdfdht.site

provenimpact.net

hotelsmadridairport.com

avondalemclarenparts.com

champagnepelissot.com

dqnshtvn.click

barbarahensonrealestate.com

jrys117.top

amb168g.pro

zionsystem.live

highcaliberhusbands.com

dsc-marketing.com

outlemax.com

legalloanmaster.com

sky71.link

Signatures

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

Formbook payload 4 IoCs

rat

resource	yara_rule
behavioral2/memory/1948-7-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/1948-12-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4248-17-0x0000000000740000-0x000000000076F000-memory.dmp	formbook
behavioral2/memory/4248-19-0x0000000000740000-0x000000000076F000-memory.dmp	formbook

Executes dropped EXE 2 IoCs

pid	Process
212	vbodsrt.exe
1948	vbodsrt.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 212 set thread context of 1948	212	vbodsrt.exe	83
PID 1948 set thread context of 3140	1948	vbodsrt.exe	46
PID 4248 set thread context of 3140	4248	systray.exe	46

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 60 IoCs

pid	Process
1948	vbodsrt.exe
1948	vbodsrt.exe
1948	vbodsrt.exe
1948	vbodsrt.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe
4248	systray.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3140	Explorer.EXE

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
212	vbodsrt.exe
1948	vbodsrt.exe
1948	vbodsrt.exe
1948	vbodsrt.exe
4248	systray.exe
4248	systray.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1948	vbodsrt.exe
Token: SeDebugPrivilege	4248	systray.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3140	Explorer.EXE

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 4472 wrote to memory of 212	4472	Sipariş 5035.exe	82
PID 4472 wrote to memory of 212	4472	Sipariş 5035.exe	82
PID 4472 wrote to memory of 212	4472	Sipariş 5035.exe	82
PID 212 wrote to memory of 1948	212	vbodsrt.exe	83
PID 212 wrote to memory of 1948	212	vbodsrt.exe	83
PID 212 wrote to memory of 1948	212	vbodsrt.exe	83
PID 212 wrote to memory of 1948	212	vbodsrt.exe	83
PID 3140 wrote to memory of 4248	3140	Explorer.EXE	85
PID 3140 wrote to memory of 4248	3140	Explorer.EXE	85
PID 3140 wrote to memory of 4248	3140	Explorer.EXE	85
PID 4248 wrote to memory of 4980	4248	systray.exe	90
PID 4248 wrote to memory of 4980	4248	systray.exe	90
PID 4248 wrote to memory of 4980	4248	systray.exe	90

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3140
- C:\Users\Admin\AppData\Local\Temp\Sipariş 5035.exe
  "C:\Users\Admin\AppData\Local\Temp\Sipariş 5035.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4472
- - C:\Users\Admin\AppData\Local\Temp\vbodsrt.exe
    "C:\Users\Admin\AppData\Local\Temp\vbodsrt.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of WriteProcessMemory
    PID:212
  - - C:\Users\Admin\AppData\Local\Temp\vbodsrt.exe
      "C:\Users\Admin\AppData\Local\Temp\vbodsrt.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:1948
- C:\Windows\SysWOW64\systray.exe
  "C:\Windows\SysWOW64\systray.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4248
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\vbodsrt.exe"
    3⤵
    PID:4980

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
200KB

MD5
3f786b0d2f21107af973f697b39a7e59

SHA1
521b8ddcd797c3e974b8ac49a67c81d85392a073

SHA256
569df557a601fa02df73b3a69b295e947596d1b26618dc9d8ff741aba924edc0

SHA512
6fdc5b2dce57f850fc3f3a65b6f013dbaa52104e9510d06f21603c6595b6f3ef443697b7e4f513fdc56bf4aeea676edaecb555ca253544d830ece4e40e75bdef

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

Filesize
200KB

MD5
3f786b0d2f21107af973f697b39a7e59

SHA1
521b8ddcd797c3e974b8ac49a67c81d85392a073

SHA256
569df557a601fa02df73b3a69b295e947596d1b26618dc9d8ff741aba924edc0

SHA512
6fdc5b2dce57f850fc3f3a65b6f013dbaa52104e9510d06f21603c6595b6f3ef443697b7e4f513fdc56bf4aeea676edaecb555ca253544d830ece4e40e75bdef

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

Filesize
200KB

MD5
3f786b0d2f21107af973f697b39a7e59

SHA1
521b8ddcd797c3e974b8ac49a67c81d85392a073

SHA256
569df557a601fa02df73b3a69b295e947596d1b26618dc9d8ff741aba924edc0

SHA512
6fdc5b2dce57f850fc3f3a65b6f013dbaa52104e9510d06f21603c6595b6f3ef443697b7e4f513fdc56bf4aeea676edaecb555ca253544d830ece4e40e75bdef

Download Submit
C:\Users\Admin\AppData\Local\Temp\wesszt.xy

Filesize
205KB

MD5
a6b70a629698511a6082803ed08bd255

SHA1
ae0c3fda105acac403cc28f314b27d68457b8e74

SHA256
6ab782e8d66d5611a65fbccbfda1b385247e45409ee5ac4bb018265ef75867d4

SHA512
6eeec865450d576068ba99b681345914ee42d9ea514d9521f6801062d4e452b36dc03606ac390303b94bd1187aa6846bb88a963c7d0042c97c9db7a60f9df649

Download Submit
memory/212-5-0x0000000002710000-0x0000000002712000-memory.dmp

Filesize
8KB

Download
memory/1948-7-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1948-10-0x0000000000EE0000-0x000000000122A000-memory.dmp

Filesize
3.3MB

Download
memory/1948-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1948-13-0x0000000000950000-0x0000000000964000-memory.dmp

Filesize
80KB

Download
memory/3140-20-0x0000000008550000-0x0000000008663000-memory.dmp

Filesize
1.1MB

Download
memory/3140-14-0x0000000008550000-0x0000000008663000-memory.dmp

Filesize
1.1MB

Download
memory/3140-23-0x00000000088D0000-0x0000000008A02000-memory.dmp

Filesize
1.2MB

Download
memory/3140-24-0x00000000088D0000-0x0000000008A02000-memory.dmp

Filesize
1.2MB

Download
memory/3140-26-0x00000000088D0000-0x0000000008A02000-memory.dmp

Filesize
1.2MB

Download
memory/4248-15-0x0000000000C20000-0x0000000000C26000-memory.dmp

Filesize
24KB

Download
memory/4248-16-0x0000000000C20000-0x0000000000C26000-memory.dmp

Filesize
24KB

Download
memory/4248-17-0x0000000000740000-0x000000000076F000-memory.dmp

Filesize
188KB

Download
memory/4248-18-0x0000000002910000-0x0000000002C5A000-memory.dmp

Filesize
3.3MB

Download
memory/4248-19-0x0000000000740000-0x000000000076F000-memory.dmp

Filesize
188KB

Download
memory/4248-22-0x0000000002670000-0x0000000002703000-memory.dmp

Filesize
588KB

Download