formbook | 4ceecda6e1ddcf38828df1e7ea882fdfae4359ed0c6a55c86cf875dd3143b549

General

Target

4ceecda6e1ddcf38828df1e7ea882fdfae4359ed0c6a55c86cf875dd3143b549.exe
Size

1.1MB
MD5

77a9deeaccfa74b131ed760e8afd6bc6
SHA1

5e1a90008e1c40d8aa892b116476f39338b3b20d
SHA256

4ceecda6e1ddcf38828df1e7ea882fdfae4359ed0c6a55c86cf875dd3143b549
SHA512

5bb993cc88a71922c7a744d546864cc5d3ae1ccbf47ba4d2c5e47c573fc35f741af77da262b95f6484f2574f9b78bf4ebbec60a5c87b05bf3f017cf42f0d5e8b
SSDEEP

24576:uRmJkcoQricOIQxiZY1iaCz/DejIKALMVog+:7JZoQrbTFZY1iaCHjAS

Score

10^/10

formbook c24t discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

c24t

Decoy

ealthbridgeccs.online

ngelicais.art

uktuksu1.sbs

fapoker.asia

hecreature.tech

orenzoplaybest14.xyz

op-smartphones-deal.today

delark.click

7395.asia

otnews.cfd

j16e.xyz

oko.events

fscxb.top

roudtxliberals.vote

asas-br.bond

ourhealthyourlife.shop

fbpd.top

j9u9.xyz

uijiuw.top

aming-chair-37588.bond

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
behavioral1/memory/1100-3-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1100-6-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1100-11-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2280-18-0x0000000000090000-0x00000000000BF000-memory.dmp	formbook

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2380 set thread context of 1100	2380	4ceecda6e1ddcf38828df1e7ea882fdfae4359ed0c6a55c86cf875dd3143b549.exe	29
PID 1100 set thread context of 1236	1100	svchost.exe	20
PID 1100 set thread context of 1236	1100	svchost.exe	20
PID 2280 set thread context of 1236	2280	cmstp.exe	20

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	cmstp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4ceecda6e1ddcf38828df1e7ea882fdfae4359ed0c6a55c86cf875dd3143b549.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
1100	svchost.exe
1100	svchost.exe
1100	svchost.exe
2280	cmstp.exe
2280	cmstp.exe
2280	cmstp.exe
2280	cmstp.exe
2280	cmstp.exe
2280	cmstp.exe
2280	cmstp.exe
2280	cmstp.exe
2280	cmstp.exe
2280	cmstp.exe
2280	cmstp.exe
2280	cmstp.exe
2280	cmstp.exe
2280	cmstp.exe
2280	cmstp.exe
2280	cmstp.exe
2280	cmstp.exe
2280	cmstp.exe
2280	cmstp.exe
2280	cmstp.exe
2280	cmstp.exe
2280	cmstp.exe
2280	cmstp.exe
2280	cmstp.exe
2280	cmstp.exe
2280	cmstp.exe
2280	cmstp.exe
2280	cmstp.exe

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
2380	4ceecda6e1ddcf38828df1e7ea882fdfae4359ed0c6a55c86cf875dd3143b549.exe
1100	svchost.exe
1100	svchost.exe
1100	svchost.exe
1100	svchost.exe
2280	cmstp.exe
2280	cmstp.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1100	svchost.exe
Token: SeDebugPrivilege	2280	cmstp.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2380 wrote to memory of 1100	2380	4ceecda6e1ddcf38828df1e7ea882fdfae4359ed0c6a55c86cf875dd3143b549.exe	29
PID 2380 wrote to memory of 1100	2380	4ceecda6e1ddcf38828df1e7ea882fdfae4359ed0c6a55c86cf875dd3143b549.exe	29
PID 2380 wrote to memory of 1100	2380	4ceecda6e1ddcf38828df1e7ea882fdfae4359ed0c6a55c86cf875dd3143b549.exe	29
PID 2380 wrote to memory of 1100	2380	4ceecda6e1ddcf38828df1e7ea882fdfae4359ed0c6a55c86cf875dd3143b549.exe	29
PID 2380 wrote to memory of 1100	2380	4ceecda6e1ddcf38828df1e7ea882fdfae4359ed0c6a55c86cf875dd3143b549.exe	29
PID 1236 wrote to memory of 2280	1236	Explorer.EXE	30
PID 1236 wrote to memory of 2280	1236	Explorer.EXE	30
PID 1236 wrote to memory of 2280	1236	Explorer.EXE	30
PID 1236 wrote to memory of 2280	1236	Explorer.EXE	30
PID 1236 wrote to memory of 2280	1236	Explorer.EXE	30
PID 1236 wrote to memory of 2280	1236	Explorer.EXE	30
PID 1236 wrote to memory of 2280	1236	Explorer.EXE	30
PID 2280 wrote to memory of 2892	2280	cmstp.exe	31
PID 2280 wrote to memory of 2892	2280	cmstp.exe	31
PID 2280 wrote to memory of 2892	2280	cmstp.exe	31
PID 2280 wrote to memory of 2892	2280	cmstp.exe	31

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1236
- C:\Users\Admin\AppData\Local\Temp\4ceecda6e1ddcf38828df1e7ea882fdfae4359ed0c6a55c86cf875dd3143b549.exe
  "C:\Users\Admin\AppData\Local\Temp\4ceecda6e1ddcf38828df1e7ea882fdfae4359ed0c6a55c86cf875dd3143b549.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:2380
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\4ceecda6e1ddcf38828df1e7ea882fdfae4359ed0c6a55c86cf875dd3143b549.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:1100
- C:\Windows\SysWOW64\cmstp.exe
  "C:\Windows\SysWOW64\cmstp.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:2280
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2892

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1100-11-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1100-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1100-4-0x0000000000790000-0x0000000000A93000-memory.dmp

Filesize
3.0MB

Download
memory/1100-7-0x00000000001D0000-0x00000000001E4000-memory.dmp

Filesize
80KB

Download
memory/1100-6-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1100-12-0x00000000002E0000-0x00000000002F4000-memory.dmp

Filesize
80KB

Download
memory/1236-13-0x0000000007C70000-0x0000000007DB7000-memory.dmp

Filesize
1.3MB

Download
memory/1236-8-0x0000000003FC0000-0x00000000040C0000-memory.dmp

Filesize
1024KB

Download
memory/1236-9-0x0000000004E00000-0x0000000004ECC000-memory.dmp

Filesize
816KB

Download
memory/1236-14-0x0000000004E00000-0x0000000004ECC000-memory.dmp

Filesize
816KB

Download
memory/1236-19-0x0000000007C70000-0x0000000007DB7000-memory.dmp

Filesize
1.3MB

Download
memory/2280-15-0x00000000003B0000-0x00000000003C8000-memory.dmp

Filesize
96KB

Download
memory/2280-17-0x00000000003B0000-0x00000000003C8000-memory.dmp

Filesize
96KB

Download
memory/2280-18-0x0000000000090000-0x00000000000BF000-memory.dmp

Filesize
188KB

Download
memory/2380-2-0x00000000030B0000-0x00000000034B0000-memory.dmp

Filesize
4.0MB

Download

Analysis

Sharing