formbook | 7cdb9e0fde39ad1578dbd905a88c8b6492a608349c0fed0c79879f5a086108e9

General

Target

E-dekont.exe
Size

286KB
MD5

7f453b503f828a474ca684b065498d01
SHA1

b82a91e97e1c0a23b993db56f9f6049a96580b34
SHA256

7cdb9e0fde39ad1578dbd905a88c8b6492a608349c0fed0c79879f5a086108e9
SHA512

167c0afb30cd84f7a2980f1713012f5722b00a642977cb1c7d6f353698a8d74c11cfb367585d1a93b3ff4defee526017d71240bb1331baaf2169062e258f73a3
SSDEEP

6144:hT5Uzm0s9s3LWwHCZwX+A6UXqc0LrWK5OcraEUq2YWPOjJlaq8+:hT55Ns3LNi+uAz6c0LrWSaxHmX8+

Score

10^/10

formbook be83 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

be83

Decoy

woodlandscancercare.org.uk

hosting-delightful.lol

bilpreco.com

diplomk-v-habarovske.com

dzgck.com

jsdappraisals.com

digitalnishant.com

bluevibesgift.com

wowchershoo.co.uk

eudoriaofficial.online

ourcampaign2024.net

barlogcode.com

calmingscents.biz

thewaterfallproject.africa

www-1911.com

cigapp.online

wooddroppers.africa

casmiya.com

haruminailbar.com

drivermindset.com

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/3840-160-0x0000000000400000-0x0000000001654000-memory.dmp	formbook
behavioral2/memory/3840-165-0x0000000000400000-0x0000000001654000-memory.dmp	formbook
behavioral2/memory/4236-171-0x0000000000E00000-0x0000000000E2F000-memory.dmp	formbook
behavioral2/memory/4236-173-0x0000000000E00000-0x0000000000E2F000-memory.dmp	formbook

Checks QEMU agent file 2 TTPs 2 IoCs

Checks presence of QEMU agent, possibly to detect virtualization.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	E-dekont.exe
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	E-dekont.exe

Loads dropped DLL 1 IoCs

pid	Process
3100	E-dekont.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in System32 directory 5 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Nonreprehensibly.Ber	E-dekont.exe
File opened for modification	C:\Windows\SysWOW64\Agaver\Ngtelsers.ini	E-dekont.exe
File opened for modification	C:\Windows\SysWOW64\Tilkmpendes\Saxofonen.ini	E-dekont.exe
File opened for modification	C:\Windows\SysWOW64\Kbelyst\Intraselection\Strbemrkning23\Arcadianly.Blo132	E-dekont.exe
File opened for modification	C:\Windows\SysWOW64\Weeds\Vederstyggeligste211\Dybgang.Aur	E-dekont.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
3840	E-dekont.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
3100	E-dekont.exe
3840	E-dekont.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3100 set thread context of 3840	3100	E-dekont.exe	92
PID 3840 set thread context of 756	3840	E-dekont.exe	49
PID 4236 set thread context of 756	4236	raserver.exe	49

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Fonts\Underdrain\skatteskemaers\Shodden\Kartonnagefabrikken.lnk	E-dekont.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 24 IoCs

pid	Process
3840	E-dekont.exe
3840	E-dekont.exe
3840	E-dekont.exe
3840	E-dekont.exe
4236	raserver.exe
4236	raserver.exe
4236	raserver.exe
4236	raserver.exe
4236	raserver.exe
4236	raserver.exe
4236	raserver.exe
4236	raserver.exe
4236	raserver.exe
4236	raserver.exe
4236	raserver.exe
4236	raserver.exe
4236	raserver.exe
4236	raserver.exe
4236	raserver.exe
4236	raserver.exe
4236	raserver.exe
4236	raserver.exe
4236	raserver.exe
4236	raserver.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
756	Explorer.EXE

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
3100	E-dekont.exe
3840	E-dekont.exe
3840	E-dekont.exe
3840	E-dekont.exe
4236	raserver.exe
4236	raserver.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3840	E-dekont.exe
Token: SeDebugPrivilege	4236	raserver.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3100 wrote to memory of 3840	3100	E-dekont.exe	92
PID 3100 wrote to memory of 3840	3100	E-dekont.exe	92
PID 3100 wrote to memory of 3840	3100	E-dekont.exe	92
PID 3100 wrote to memory of 3840	3100	E-dekont.exe	92
PID 756 wrote to memory of 4236	756	Explorer.EXE	95
PID 756 wrote to memory of 4236	756	Explorer.EXE	95
PID 756 wrote to memory of 4236	756	Explorer.EXE	95
PID 4236 wrote to memory of 1824	4236	raserver.exe	96
PID 4236 wrote to memory of 1824	4236	raserver.exe	96
PID 4236 wrote to memory of 1824	4236	raserver.exe	96

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:756
- C:\Users\Admin\AppData\Local\Temp\E-dekont.exe
  "C:\Users\Admin\AppData\Local\Temp\E-dekont.exe"
  2⤵
  - Checks QEMU agent file
  - Loads dropped DLL
  - Drops file in System32 directory
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of SetThreadContext
  - Drops file in Windows directory
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:3100
- - C:\Users\Admin\AppData\Local\Temp\E-dekont.exe
    "C:\Users\Admin\AppData\Local\Temp\E-dekont.exe"
    3⤵
    - Checks QEMU agent file
    - Suspicious use of NtCreateThreadExHideFromDebugger
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:3840
- C:\Windows\SysWOW64\autofmt.exe
  "C:\Windows\SysWOW64\autofmt.exe"
  2⤵
  PID:3300
- C:\Windows\SysWOW64\autofmt.exe
  "C:\Windows\SysWOW64\autofmt.exe"
  2⤵
  PID:1804
- C:\Windows\SysWOW64\raserver.exe
  "C:\Windows\SysWOW64\raserver.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4236
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\E-dekont.exe"
    3⤵
    PID:1824

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsyA9C4.tmp\System.dll

Filesize
12KB

MD5
d968cb2b98b83c03a9f02dd9b8df97dc

SHA1
d784c9b7a92dce58a5038beb62a48ff509e166a0

SHA256
a4ec98011ef99e595912718c1a1bf1aa67bfc2192575729d42f559d01f67b95c

SHA512
2ee41dc68f329a1519a8073ece7d746c9f3bf45d8ef3b915deb376af37e26074134af5f83c8af0fe0ab227f0d1acca9f37e5ca7ae37c46c3bcc0331fe5e2b97e

Download Submit
C:\Users\Admin\AppData\Roaming\DORME.ini

Filesize
31B

MD5
3000f7f0f12b7139ea28160c52098e25

SHA1
9d032395f38d341881019b996e591160d542054b

SHA256
467b09ff26622746d205628ae325ec9838461bc5fe741b3757bb39ddec87ecb1

SHA512
a76a2f1e3686e2ffd03388ec7dbcd4afa6ae53ccd3aa40c6fbbf0c994eee5e2685d0c412f15ec4506c1175f5a84712e1a8b7ae32e6a0327e1ba47321a59e0ee2

Download Submit
memory/756-164-0x0000000008BE0000-0x0000000008D3F000-memory.dmp

Filesize
1.4MB

Download
memory/756-179-0x0000000008390000-0x0000000008482000-memory.dmp

Filesize
968KB

Download
memory/756-177-0x0000000008390000-0x0000000008482000-memory.dmp

Filesize
968KB

Download
memory/756-176-0x0000000008390000-0x0000000008482000-memory.dmp

Filesize
968KB

Download
memory/3840-165-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/3840-163-0x00000000000D0000-0x00000000000E4000-memory.dmp

Filesize
80KB

Download
memory/3840-162-0x0000000036190000-0x00000000364DA000-memory.dmp

Filesize
3.3MB

Download
memory/3840-167-0x0000000001660000-0x0000000005D57000-memory.dmp

Filesize
71.0MB

Download
memory/3840-161-0x0000000001660000-0x0000000005D57000-memory.dmp

Filesize
71.0MB

Download
memory/3840-160-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/3840-159-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/4236-166-0x0000000000390000-0x00000000003AF000-memory.dmp

Filesize
124KB

Download
memory/4236-169-0x0000000000390000-0x00000000003AF000-memory.dmp

Filesize
124KB

Download
memory/4236-171-0x0000000000E00000-0x0000000000E2F000-memory.dmp

Filesize
188KB

Download
memory/4236-172-0x0000000002DC0000-0x000000000310A000-memory.dmp

Filesize
3.3MB

Download
memory/4236-173-0x0000000000E00000-0x0000000000E2F000-memory.dmp

Filesize
188KB

Download
memory/4236-175-0x0000000002B30000-0x0000000002BC3000-memory.dmp

Filesize
588KB

Download

Analysis

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