formbook | 860b90ba1c36e237b2aca9e77024d953e5aa3b9d4a736130d355da6c76cf0930

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231023-en
resource tags

arch:x64arch:x86image:win10v2004-20231023-enlocale:en-usos:windows10-2004-x64system
submitted
16/11/2023, 05:06

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General

Target

860b90ba1c36e237b2aca9e77024d953e5aa3b9d4a736130d355da6c76cf0930.exe
Size

332KB
MD5

5b691330acaa3c5432b9caadbeb82003
SHA1

7084d84dcc45be8161bc3c044c02d02f05d46b95
SHA256

860b90ba1c36e237b2aca9e77024d953e5aa3b9d4a736130d355da6c76cf0930
SHA512

dd8fb100e9d3b3d7404265c400ff1d055fc31d07f6359cfe95902045f9f48e3ca348ccce3071bc00bcca7f39a1073df45ea79381b81d697aafe6ff2ea7c765c4
SSDEEP

6144:BBlL/51hWPefvD4kFdshzsQ1tmlwOctCRUDkBYz:HHTfvD4kqsQel5IZF

Score

10^/10

formbook tb8i rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

tb8i

Decoy

097jz.com

physium.net

sherwoodsubnet.com

scbaya.fun

us2048.top

danlclmn.com

starsyx.com

foxbox-digi.store

thefishermanhouse.com

salvanandcie.com

rykuruh.cfd

gelaoguan.net

petar-gojun.com

coandcompanyboutique.com

decentralizedcryptos.com

ecuajet.net

livbythebeach.com

cleaning-services-33235.bond

free-webbuilder.today

pussypower.net

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/2788-7-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2788-11-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/3092-18-0x00000000005C0000-0x00000000005EF000-memory.dmp	formbook
behavioral1/memory/3092-20-0x00000000005C0000-0x00000000005EF000-memory.dmp	formbook

Executes dropped EXE 2 IoCs

pid	Process
4228	cegsxx.exe
2788	cegsxx.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4228 set thread context of 2788	4228	cegsxx.exe	87
PID 2788 set thread context of 3260	2788	cegsxx.exe	37
PID 3092 set thread context of 3260	3092	cscript.exe	37

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

System Information Discovery
T1082

Modifies registry class 3 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-984744499-3605095035-265325720-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\	Explorer.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	Explorer.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2788	cegsxx.exe
2788	cegsxx.exe
2788	cegsxx.exe
2788	cegsxx.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe
3092	cscript.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3260	Explorer.EXE

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
4228	cegsxx.exe
2788	cegsxx.exe
2788	cegsxx.exe
2788	cegsxx.exe
3092	cscript.exe
3092	cscript.exe

Suspicious use of AdjustPrivilegeToken 17 IoCs

description	pid	Process
Token: SeDebugPrivilege	2788	cegsxx.exe
Token: SeDebugPrivilege	3092	cscript.exe
Token: SeManageVolumePrivilege	3364	svchost.exe
Token: SeShutdownPrivilege	3260	Explorer.EXE
Token: SeCreatePagefilePrivilege	3260	Explorer.EXE
Token: SeShutdownPrivilege	3260	Explorer.EXE
Token: SeCreatePagefilePrivilege	3260	Explorer.EXE
Token: SeShutdownPrivilege	3260	Explorer.EXE
Token: SeCreatePagefilePrivilege	3260	Explorer.EXE
Token: SeShutdownPrivilege	3260	Explorer.EXE
Token: SeCreatePagefilePrivilege	3260	Explorer.EXE
Token: SeShutdownPrivilege	3260	Explorer.EXE
Token: SeCreatePagefilePrivilege	3260	Explorer.EXE
Token: SeShutdownPrivilege	3260	Explorer.EXE
Token: SeCreatePagefilePrivilege	3260	Explorer.EXE
Token: SeShutdownPrivilege	3260	Explorer.EXE
Token: SeCreatePagefilePrivilege	3260	Explorer.EXE

Suspicious use of FindShellTrayWindow 5 IoCs

pid	Process
3260	Explorer.EXE
3260	Explorer.EXE
3260	Explorer.EXE
3260	Explorer.EXE
3260	Explorer.EXE

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
3260	Explorer.EXE
3260	Explorer.EXE
3260	Explorer.EXE

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3260	Explorer.EXE

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 4408 wrote to memory of 4228	4408	860b90ba1c36e237b2aca9e77024d953e5aa3b9d4a736130d355da6c76cf0930.exe	85
PID 4408 wrote to memory of 4228	4408	860b90ba1c36e237b2aca9e77024d953e5aa3b9d4a736130d355da6c76cf0930.exe	85
PID 4408 wrote to memory of 4228	4408	860b90ba1c36e237b2aca9e77024d953e5aa3b9d4a736130d355da6c76cf0930.exe	85
PID 4228 wrote to memory of 2788	4228	cegsxx.exe	87
PID 4228 wrote to memory of 2788	4228	cegsxx.exe	87
PID 4228 wrote to memory of 2788	4228	cegsxx.exe	87
PID 4228 wrote to memory of 2788	4228	cegsxx.exe	87
PID 3260 wrote to memory of 3092	3260	Explorer.EXE	88
PID 3260 wrote to memory of 3092	3260	Explorer.EXE	88
PID 3260 wrote to memory of 3092	3260	Explorer.EXE	88
PID 3092 wrote to memory of 4816	3092	cscript.exe	89
PID 3092 wrote to memory of 4816	3092	cscript.exe	89
PID 3092 wrote to memory of 4816	3092	cscript.exe	89

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3260
- C:\Users\Admin\AppData\Local\Temp\860b90ba1c36e237b2aca9e77024d953e5aa3b9d4a736130d355da6c76cf0930.exe
  "C:\Users\Admin\AppData\Local\Temp\860b90ba1c36e237b2aca9e77024d953e5aa3b9d4a736130d355da6c76cf0930.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4408
- - C:\Users\Admin\AppData\Local\Temp\cegsxx.exe
    "C:\Users\Admin\AppData\Local\Temp\cegsxx.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of WriteProcessMemory
    PID:4228
  - - C:\Users\Admin\AppData\Local\Temp\cegsxx.exe
      "C:\Users\Admin\AppData\Local\Temp\cegsxx.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:2788
- C:\Windows\SysWOW64\cscript.exe
  "C:\Windows\SysWOW64\cscript.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3092
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\cegsxx.exe"
    3⤵
    PID:4816

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" "C:\Windows\SYSTEM32\EDGEHTML.dll",#141 Microsoft.VCLibs.140.00_8wekyb3d8bbwe
1⤵
PID:1492

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k UnistackSvcGroup
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3364

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\Comms\UnistoreDB\store.jfm

Filesize
16KB

MD5
4cc7f41cd478adeb7e50928e4644d132

SHA1
a47777dd6d684c8883333e9a3233839b0cd56165

SHA256
b08a7a092590402f05a5f6211aab0e7ceb63965e5f50bb622725fc5e97bc1040

SHA512
d8e97b09caabd8451c58d724c217f63c33dd83d60767e14ab5f943a4dc700b9b9a3a23ec2a2611150ea3903e871a708f2234208cbd5500c4bc7458494061be40

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

Filesize
176KB

MD5
0a1743cf9e74100a9fd023acf3f36e49

SHA1
4a7d1c28ccb0ae96ed074466ad1bdd22a2d36457

SHA256
5491e80a096d5f370f010e69d9aba77eb3ab49f8a259dea544106a7f4f7aad74

SHA512
9b4ce1bddbb32ce7fa4916cd6d7616fc9016234e4a6cfe7ddb97ffb42f5da8000dbdf5c709e0046036d72ae481c10268504243a8b09582d80845b10868aafea4

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

Filesize
176KB

MD5
0a1743cf9e74100a9fd023acf3f36e49

SHA1
4a7d1c28ccb0ae96ed074466ad1bdd22a2d36457

SHA256
5491e80a096d5f370f010e69d9aba77eb3ab49f8a259dea544106a7f4f7aad74

SHA512
9b4ce1bddbb32ce7fa4916cd6d7616fc9016234e4a6cfe7ddb97ffb42f5da8000dbdf5c709e0046036d72ae481c10268504243a8b09582d80845b10868aafea4

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

Filesize
176KB

MD5
0a1743cf9e74100a9fd023acf3f36e49

SHA1
4a7d1c28ccb0ae96ed074466ad1bdd22a2d36457

SHA256
5491e80a096d5f370f010e69d9aba77eb3ab49f8a259dea544106a7f4f7aad74

SHA512
9b4ce1bddbb32ce7fa4916cd6d7616fc9016234e4a6cfe7ddb97ffb42f5da8000dbdf5c709e0046036d72ae481c10268504243a8b09582d80845b10868aafea4

Download Submit
C:\Users\Admin\AppData\Local\Temp\zardzr.n

Filesize
205KB

MD5
94c1de70f3399bfbb9a75c90f80cb147

SHA1
058d4d73ba9a02ba877be7664f159c3be08a4331

SHA256
1db2947c6a53bb241df0b2d3fe158a3ec6fd418f8cd77b6041b8c77e520248d3

SHA512
9bde301e2a4d0b06a9efe7c3e87a34f094de17ea871e4025a3b2c1e8d3221884afa3dfb917578eb66bf074b34d29d5cec9c7da099dd65986ab7e18009758f2e2

Download Submit
memory/2788-7-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2788-9-0x0000000000A70000-0x0000000000DBA000-memory.dmp

Filesize
3.3MB

Download
memory/2788-11-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2788-12-0x0000000000500000-0x0000000000514000-memory.dmp

Filesize
80KB

Download
memory/3092-21-0x00000000027E0000-0x0000000002873000-memory.dmp

Filesize
588KB

Download
memory/3092-15-0x0000000000100000-0x0000000000127000-memory.dmp

Filesize
156KB

Download
memory/3092-17-0x0000000000100000-0x0000000000127000-memory.dmp

Filesize
156KB

Download
memory/3092-18-0x00000000005C0000-0x00000000005EF000-memory.dmp

Filesize
188KB

Download
memory/3092-19-0x00000000029A0000-0x0000000002CEA000-memory.dmp

Filesize
3.3MB

Download
memory/3092-20-0x00000000005C0000-0x00000000005EF000-memory.dmp

Filesize
188KB

Download
memory/3260-25-0x0000000008240000-0x0000000008393000-memory.dmp

Filesize
1.3MB

Download
memory/3260-23-0x0000000002AB0000-0x0000000002BB0000-memory.dmp

Filesize
1024KB

Download
memory/3260-24-0x0000000002AB0000-0x0000000002BB0000-memory.dmp

Filesize
1024KB

Download
memory/3260-13-0x0000000008240000-0x0000000008393000-memory.dmp

Filesize
1.3MB

Download
memory/3260-28-0x0000000002AB0000-0x0000000002BB0000-memory.dmp

Filesize
1024KB

Download
memory/3364-69-0x0000029616F60000-0x0000029616F61000-memory.dmp

Filesize
4KB

Download
memory/3364-72-0x0000029616F60000-0x0000029616F61000-memory.dmp

Filesize
4KB

Download
memory/3364-65-0x0000029616F40000-0x0000029616F41000-memory.dmp

Filesize
4KB

Download
memory/3364-66-0x0000029616F60000-0x0000029616F61000-memory.dmp

Filesize
4KB

Download
memory/3364-67-0x0000029616F60000-0x0000029616F61000-memory.dmp

Filesize
4KB

Download
memory/3364-68-0x0000029616F60000-0x0000029616F61000-memory.dmp

Filesize
4KB

Download
memory/3364-49-0x000002960EA50000-0x000002960EA60000-memory.dmp

Filesize
64KB

Download
memory/3364-70-0x0000029616F60000-0x0000029616F61000-memory.dmp

Filesize
4KB

Download
memory/3364-71-0x0000029616F60000-0x0000029616F61000-memory.dmp

Filesize
4KB

Download
memory/3364-33-0x000002960E950000-0x000002960E960000-memory.dmp

Filesize
64KB

Download
memory/3364-73-0x0000029616F60000-0x0000029616F61000-memory.dmp

Filesize
4KB

Download
memory/3364-74-0x0000029616F60000-0x0000029616F61000-memory.dmp

Filesize
4KB

Download
memory/3364-75-0x0000029616F60000-0x0000029616F61000-memory.dmp

Filesize
4KB

Download
memory/3364-76-0x0000029616C90000-0x0000029616C91000-memory.dmp

Filesize
4KB

Download
memory/3364-77-0x0000029616C80000-0x0000029616C81000-memory.dmp

Filesize
4KB

Download
memory/3364-79-0x0000029616C90000-0x0000029616C91000-memory.dmp

Filesize
4KB

Download
memory/3364-82-0x0000029616C80000-0x0000029616C81000-memory.dmp

Filesize
4KB

Download
memory/3364-85-0x0000029616BC0000-0x0000029616BC1000-memory.dmp

Filesize
4KB

Download
memory/4228-5-0x00000000004C0000-0x00000000004C2000-memory.dmp

Filesize
8KB

Download