formbook | da1f2444a6a87363c210ff73a4111ccea458b1d35b2cbe7c1c54fa471c8f752f

General

Target

order #393405.xls
Size

1.3MB
MD5

a913096f787c53f96a34dfff28a68ac1
SHA1

43ea14976d150ca3146c0fde2f44947df9e2f4af
SHA256

da1f2444a6a87363c210ff73a4111ccea458b1d35b2cbe7c1c54fa471c8f752f
SHA512

ec32f7db5917cfb7162d32386c3dd38cc1373a6635668c3ffe158130e8d4d1eeadb69ca0a6ee6fb9d09168b83e24f1b9ee923d96a7f668b2a9d09f0e3a32d81f
SSDEEP

24576:UaZy0w6VgjKaWlEzp7aUZydw6VzjKaWlEzp7azzd6f/b7QAUQp5E/zwwx:UE86VgjKjOzRJ6VzjKjOzEdU7/UX/zf

Score

10^/10

formbook sy22 rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

sy22

Decoy

vinteligencia.com

displayfridges.fun

completetip.com

giallozafferrano.com

jizihao1.com

mysticheightstrail.com

fourseasonslb.com

kjnala.shop

mosiacwall.com

vandistreet.com

gracefullytouchedartistry.com

hbiwhwr.shop

mfmz.net

hrmbrillianz.com

funwarsztat.com

polewithcandy.com

ourrajasthan.com

wilhouettteamerica.com

johnnystintshop.com

asgnelwin.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
behavioral1/memory/2448-88-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2448-93-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2684-99-0x0000000000090000-0x00000000000BF000-memory.dmp	formbook
behavioral1/memory/2684-101-0x0000000000090000-0x00000000000BF000-memory.dmp	formbook

Blocklisted process makes network request 1 IoCs

flow	pid	Process
4	1440	EQNEDT32.EXE

Downloads MZ/PE file

Executes dropped EXE 2 IoCs

pid	Process
2068	dasHost.exe
2448	dasHost.exe

Loads dropped DLL 3 IoCs

pid	Process
1440	EQNEDT32.EXE
1440	EQNEDT32.EXE
2068	dasHost.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2068 set thread context of 2448	2068	dasHost.exe	34
PID 2448 set thread context of 1368	2448	dasHost.exe	16
PID 2684 set thread context of 1368	2684	wuapp.exe	16

Launches Equation Editor 1 TTPs 1 IoCs

Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

exploit

Exploitation for Client Execution

T1203

pid	Process
1440	EQNEDT32.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2676	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 22 IoCs

pid	Process
2448	dasHost.exe
2448	dasHost.exe
2684	wuapp.exe
2684	wuapp.exe
2684	wuapp.exe
2684	wuapp.exe
2684	wuapp.exe
2684	wuapp.exe
2684	wuapp.exe
2684	wuapp.exe
2684	wuapp.exe
2684	wuapp.exe
2684	wuapp.exe
2684	wuapp.exe
2684	wuapp.exe
2684	wuapp.exe
2684	wuapp.exe
2684	wuapp.exe
2684	wuapp.exe
2684	wuapp.exe
2684	wuapp.exe
2684	wuapp.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1368	Explorer.EXE

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2448	dasHost.exe
2448	dasHost.exe
2448	dasHost.exe
2684	wuapp.exe
2684	wuapp.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2448	dasHost.exe
Token: SeDebugPrivilege	2684	wuapp.exe
Token: SeShutdownPrivilege	1368	Explorer.EXE
Token: SeShutdownPrivilege	1368	Explorer.EXE

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2676	EXCEL.EXE
2676	EXCEL.EXE
2676	EXCEL.EXE

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 1440 wrote to memory of 2068	1440	EQNEDT32.EXE	30
PID 1440 wrote to memory of 2068	1440	EQNEDT32.EXE	30
PID 1440 wrote to memory of 2068	1440	EQNEDT32.EXE	30
PID 1440 wrote to memory of 2068	1440	EQNEDT32.EXE	30
PID 2068 wrote to memory of 2448	2068	dasHost.exe	34
PID 2068 wrote to memory of 2448	2068	dasHost.exe	34
PID 2068 wrote to memory of 2448	2068	dasHost.exe	34
PID 2068 wrote to memory of 2448	2068	dasHost.exe	34
PID 2068 wrote to memory of 2448	2068	dasHost.exe	34
PID 2068 wrote to memory of 2448	2068	dasHost.exe	34
PID 2068 wrote to memory of 2448	2068	dasHost.exe	34
PID 1368 wrote to memory of 2684	1368	Explorer.EXE	35
PID 1368 wrote to memory of 2684	1368	Explorer.EXE	35
PID 1368 wrote to memory of 2684	1368	Explorer.EXE	35
PID 1368 wrote to memory of 2684	1368	Explorer.EXE	35
PID 1368 wrote to memory of 2684	1368	Explorer.EXE	35
PID 1368 wrote to memory of 2684	1368	Explorer.EXE	35
PID 1368 wrote to memory of 2684	1368	Explorer.EXE	35
PID 2684 wrote to memory of 1920	2684	wuapp.exe	36
PID 2684 wrote to memory of 1920	2684	wuapp.exe	36
PID 2684 wrote to memory of 1920	2684	wuapp.exe	36
PID 2684 wrote to memory of 1920	2684	wuapp.exe	36

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1368
- C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
  "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde "C:\Users\Admin\AppData\Local\Temp\order #393405.xls"
  2⤵
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious use of SetWindowsHookEx
  PID:2676
- C:\Windows\SysWOW64\wuapp.exe
  "C:\Windows\SysWOW64\wuapp.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2684
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\dasHost.exe"
    3⤵
    PID:1920

C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
"C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
1⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Launches Equation Editor
- Suspicious use of WriteProcessMemory
PID:1440
- C:\Users\Admin\AppData\Local\Temp\dasHost.exe
  "C:\Users\Admin\AppData\Local\Temp\dasHost.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:2068
- - C:\Users\Admin\AppData\Local\Temp\dasHost.exe
    "C:\Users\Admin\AppData\Local\Temp\dasHost.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2448

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Exploitation for Client Execution

1

T1203

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.MSO\E7779D06.emf

Filesize
1.4MB

MD5
a01b9617553432807b9b58025b338d97

SHA1
439bdcc450408b9735b2428c2d53d2e6977fa58c

SHA256
7a0426ed2e2349916969ff7087c0f76089fb8ce7f4627f3d11ccbc1aaefcedce

SHA512
312cc2563fa865d6a939fea85a520627c73ed9a95bafc98c89495f21d535dc658825be74b64f0f5c5815d1d234fc6e77a71779247e4973e39ba8dccec2f09bee

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

Filesize
537KB

MD5
d145e45a54f7ad9c25620e97fb545734

SHA1
4a6a4de62f44c29f3008de7436f7fa4f44814dd3

SHA256
edb6d1a583895269b9b3d58b7acdb1a8590a2289529f9c9e937a33fed180add6

SHA512
a00d9dbff3cd5a6c3e4efdf349b3ae65d948a3b2a651e75325bce9aa5896959bb93b9f90a27b44e1e2d24ac17b4164bb2a7e8812086540d7b2a862c3e9fe4b9f

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

Filesize
537KB

MD5
d145e45a54f7ad9c25620e97fb545734

SHA1
4a6a4de62f44c29f3008de7436f7fa4f44814dd3

SHA256
edb6d1a583895269b9b3d58b7acdb1a8590a2289529f9c9e937a33fed180add6

SHA512
a00d9dbff3cd5a6c3e4efdf349b3ae65d948a3b2a651e75325bce9aa5896959bb93b9f90a27b44e1e2d24ac17b4164bb2a7e8812086540d7b2a862c3e9fe4b9f

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

Filesize
537KB

MD5
d145e45a54f7ad9c25620e97fb545734

SHA1
4a6a4de62f44c29f3008de7436f7fa4f44814dd3

SHA256
edb6d1a583895269b9b3d58b7acdb1a8590a2289529f9c9e937a33fed180add6

SHA512
a00d9dbff3cd5a6c3e4efdf349b3ae65d948a3b2a651e75325bce9aa5896959bb93b9f90a27b44e1e2d24ac17b4164bb2a7e8812086540d7b2a862c3e9fe4b9f

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

Filesize
537KB

MD5
d145e45a54f7ad9c25620e97fb545734

SHA1
4a6a4de62f44c29f3008de7436f7fa4f44814dd3

SHA256
edb6d1a583895269b9b3d58b7acdb1a8590a2289529f9c9e937a33fed180add6

SHA512
a00d9dbff3cd5a6c3e4efdf349b3ae65d948a3b2a651e75325bce9aa5896959bb93b9f90a27b44e1e2d24ac17b4164bb2a7e8812086540d7b2a862c3e9fe4b9f

Download Submit
\Users\Admin\AppData\Local\Temp\dasHost.exe

Filesize
537KB

MD5
d145e45a54f7ad9c25620e97fb545734

SHA1
4a6a4de62f44c29f3008de7436f7fa4f44814dd3

SHA256
edb6d1a583895269b9b3d58b7acdb1a8590a2289529f9c9e937a33fed180add6

SHA512
a00d9dbff3cd5a6c3e4efdf349b3ae65d948a3b2a651e75325bce9aa5896959bb93b9f90a27b44e1e2d24ac17b4164bb2a7e8812086540d7b2a862c3e9fe4b9f

Download Submit
\Users\Admin\AppData\Local\Temp\dasHost.exe

Filesize
537KB

MD5
d145e45a54f7ad9c25620e97fb545734

SHA1
4a6a4de62f44c29f3008de7436f7fa4f44814dd3

SHA256
edb6d1a583895269b9b3d58b7acdb1a8590a2289529f9c9e937a33fed180add6

SHA512
a00d9dbff3cd5a6c3e4efdf349b3ae65d948a3b2a651e75325bce9aa5896959bb93b9f90a27b44e1e2d24ac17b4164bb2a7e8812086540d7b2a862c3e9fe4b9f

Download Submit
\Users\Admin\AppData\Local\Temp\dasHost.exe

Filesize
537KB

MD5
d145e45a54f7ad9c25620e97fb545734

SHA1
4a6a4de62f44c29f3008de7436f7fa4f44814dd3

SHA256
edb6d1a583895269b9b3d58b7acdb1a8590a2289529f9c9e937a33fed180add6

SHA512
a00d9dbff3cd5a6c3e4efdf349b3ae65d948a3b2a651e75325bce9aa5896959bb93b9f90a27b44e1e2d24ac17b4164bb2a7e8812086540d7b2a862c3e9fe4b9f

Download Submit
memory/1368-110-0x0000000004EF0000-0x0000000004FA3000-memory.dmp

Filesize
716KB

Download
memory/1368-95-0x0000000000200000-0x0000000000300000-memory.dmp

Filesize
1024KB

Download
memory/1368-96-0x0000000006FF0000-0x0000000007191000-memory.dmp

Filesize
1.6MB

Download
memory/1368-102-0x0000000006FF0000-0x0000000007191000-memory.dmp

Filesize
1.6MB

Download
memory/1368-135-0x000007FEE4990000-0x000007FEE499A000-memory.dmp

Filesize
40KB

Download
memory/1368-134-0x000007FEF5C50000-0x000007FEF5D93000-memory.dmp

Filesize
1.3MB

Download
memory/1368-107-0x0000000004EF0000-0x0000000004FA3000-memory.dmp

Filesize
716KB

Download
memory/1368-108-0x0000000004EF0000-0x0000000004FA3000-memory.dmp

Filesize
716KB

Download
memory/2068-80-0x0000000004A70000-0x0000000004AB0000-memory.dmp

Filesize
256KB

Download
memory/2068-74-0x000000006BEC0000-0x000000006C5AE000-memory.dmp

Filesize
6.9MB

Download
memory/2068-75-0x0000000000FE0000-0x000000000106C000-memory.dmp

Filesize
560KB

Download
memory/2068-82-0x0000000004FE0000-0x000000000504E000-memory.dmp

Filesize
440KB

Download
memory/2068-81-0x0000000000240000-0x000000000024E000-memory.dmp

Filesize
56KB

Download
memory/2068-79-0x000000006BEC0000-0x000000006C5AE000-memory.dmp

Filesize
6.9MB

Download
memory/2068-90-0x000000006BEC0000-0x000000006C5AE000-memory.dmp

Filesize
6.9MB

Download
memory/2068-78-0x0000000000210000-0x0000000000220000-memory.dmp

Filesize
64KB

Download
memory/2068-77-0x0000000004A70000-0x0000000004AB0000-memory.dmp

Filesize
256KB

Download
memory/2448-88-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2448-85-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2448-93-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2448-94-0x0000000000170000-0x0000000000184000-memory.dmp

Filesize
80KB

Download
memory/2448-91-0x0000000000A40000-0x0000000000D43000-memory.dmp

Filesize
3.0MB

Download
memory/2448-84-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2448-86-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2676-54-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2676-76-0x000000007387D000-0x0000000073888000-memory.dmp

Filesize
44KB

Download
memory/2676-129-0x000000007387D000-0x0000000073888000-memory.dmp

Filesize
44KB

Download
memory/2676-118-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2676-55-0x000000007387D000-0x0000000073888000-memory.dmp

Filesize
44KB

Download
memory/2684-99-0x0000000000090000-0x00000000000BF000-memory.dmp

Filesize
188KB

Download
memory/2684-104-0x0000000001D60000-0x0000000001DF3000-memory.dmp

Filesize
588KB

Download
memory/2684-101-0x0000000000090000-0x00000000000BF000-memory.dmp

Filesize
188KB

Download
memory/2684-100-0x0000000001E60000-0x0000000002163000-memory.dmp

Filesize
3.0MB

Download
memory/2684-98-0x00000000008C0000-0x00000000008CB000-memory.dmp

Filesize
44KB

Download
memory/2684-97-0x00000000008C0000-0x00000000008CB000-memory.dmp

Filesize
44KB

Download

Analysis

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