formbook | 80b2b9875c0ea2e49f7b6cd9102fffda48d11adbc40a6a861039656dda687ee6

General

Target

f79d4a4a519f6ddaf119529ca2392d7b7721901b9761264d0d2ff1410dda9e25.exe
Size

238KB
MD5

102b3ebb841c1dffa5b08afcc39222dc
SHA1

758e0993c007af3949a60a0ffe1ec19c4e045ced
SHA256

f79d4a4a519f6ddaf119529ca2392d7b7721901b9761264d0d2ff1410dda9e25
SHA512

e1452b4ac7b453b6f899554b223596e7ce258986358e56b3f2dc69bafc2178b6c83894fe507dd9a5d4d0df687b584ae41ada6482b1e73d208e0cb59ca37ac446
SSDEEP

6144:TxDpLHyngojOTo5Y+pfy3jBabNIjhfFcauPkqSEaBx5KNWYi17lrsAo:jDSpyo5Y+pqVabW3ca+eKMtsAo

Score

10^/10

formbook b62r discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

b62r

Decoy

gaykolkata.com

idfinancing.com

hoangphucpharmacy.com

lotworksvariouss.biz

abanchiq.com

galaxylike.com

lyhfyp.com

phantomux.com

lobotours.net

dapcol.online

airplay90.com

hylserviciosintegrales.com

lvmvdp.xyz

economybooiings.com

epiteks.com

soprendenteshop.com

mangaclsh.com

mywebprofile.xyz

fabianwilliamart.com

ayabadge.com

Signatures

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

Formbook payload 4 IoCs

rat

resource	yara_rule
behavioral1/memory/2256-12-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2256-15-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2256-18-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2736-25-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Executes dropped EXE 2 IoCs

pid	Process
2708	wivczschg.exe
2256	wivczschg.exe

Loads dropped DLL 2 IoCs

pid	Process
3048	f79d4a4a519f6ddaf119529ca2392d7b7721901b9761264d0d2ff1410dda9e25.exe
2708	wivczschg.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2708 set thread context of 2256	2708	wivczschg.exe	32
PID 2256 set thread context of 1208	2256	wivczschg.exe	21
PID 2256 set thread context of 1208	2256	wivczschg.exe	21
PID 2736 set thread context of 1208	2736	raserver.exe	21

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 4 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	f79d4a4a519f6ddaf119529ca2392d7b7721901b9761264d0d2ff1410dda9e25.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wivczschg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	raserver.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
2256	wivczschg.exe
2256	wivczschg.exe
2256	wivczschg.exe
2736	raserver.exe
2736	raserver.exe
2736	raserver.exe
2736	raserver.exe
2736	raserver.exe
2736	raserver.exe
2736	raserver.exe
2736	raserver.exe
2736	raserver.exe
2736	raserver.exe
2736	raserver.exe
2736	raserver.exe
2736	raserver.exe
2736	raserver.exe
2736	raserver.exe
2736	raserver.exe
2736	raserver.exe
2736	raserver.exe
2736	raserver.exe
2736	raserver.exe
2736	raserver.exe
2736	raserver.exe
2736	raserver.exe
2736	raserver.exe
2736	raserver.exe
2736	raserver.exe
2736	raserver.exe
2736	raserver.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2256	wivczschg.exe
2256	wivczschg.exe
2256	wivczschg.exe
2256	wivczschg.exe
2736	raserver.exe
2736	raserver.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2256	wivczschg.exe
Token: SeDebugPrivilege	2736	raserver.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 3048 wrote to memory of 2708	3048	f79d4a4a519f6ddaf119529ca2392d7b7721901b9761264d0d2ff1410dda9e25.exe	30
PID 3048 wrote to memory of 2708	3048	f79d4a4a519f6ddaf119529ca2392d7b7721901b9761264d0d2ff1410dda9e25.exe	30
PID 3048 wrote to memory of 2708	3048	f79d4a4a519f6ddaf119529ca2392d7b7721901b9761264d0d2ff1410dda9e25.exe	30
PID 3048 wrote to memory of 2708	3048	f79d4a4a519f6ddaf119529ca2392d7b7721901b9761264d0d2ff1410dda9e25.exe	30
PID 2708 wrote to memory of 2256	2708	wivczschg.exe	32
PID 2708 wrote to memory of 2256	2708	wivczschg.exe	32
PID 2708 wrote to memory of 2256	2708	wivczschg.exe	32
PID 2708 wrote to memory of 2256	2708	wivczschg.exe	32
PID 2708 wrote to memory of 2256	2708	wivczschg.exe	32
PID 2708 wrote to memory of 2256	2708	wivczschg.exe	32
PID 2708 wrote to memory of 2256	2708	wivczschg.exe	32
PID 1208 wrote to memory of 2736	1208	Explorer.EXE	33
PID 1208 wrote to memory of 2736	1208	Explorer.EXE	33
PID 1208 wrote to memory of 2736	1208	Explorer.EXE	33
PID 1208 wrote to memory of 2736	1208	Explorer.EXE	33
PID 2736 wrote to memory of 3060	2736	raserver.exe	35
PID 2736 wrote to memory of 3060	2736	raserver.exe	35
PID 2736 wrote to memory of 3060	2736	raserver.exe	35
PID 2736 wrote to memory of 3060	2736	raserver.exe	35

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1208
- C:\Users\Admin\AppData\Local\Temp\f79d4a4a519f6ddaf119529ca2392d7b7721901b9761264d0d2ff1410dda9e25.exe
  "C:\Users\Admin\AppData\Local\Temp\f79d4a4a519f6ddaf119529ca2392d7b7721901b9761264d0d2ff1410dda9e25.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3048
- - C:\Users\Admin\AppData\Local\Temp\wivczschg.exe
    C:\Users\Admin\AppData\Local\Temp\wivczschg.exe C:\Users\Admin\AppData\Local\Temp\bqbubiphod
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2708
  - - C:\Users\Admin\AppData\Local\Temp\wivczschg.exe
      C:\Users\Admin\AppData\Local\Temp\wivczschg.exe C:\Users\Admin\AppData\Local\Temp\bqbubiphod
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:2256
- C:\Windows\SysWOW64\raserver.exe
  "C:\Windows\SysWOW64\raserver.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:2736
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\wivczschg.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3060

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\64mfra74j7jvxc

Filesize
213KB

MD5
b12547b07cd7190d39483d6edc98a6a2

SHA1
88597120504ec40dfd469792846cc170113db9e1

SHA256
328bc274527798a2b7dfcfac1a4d23a650d8c144b11fd460bd57b3828aeab4cb

SHA512
6ca6a1a15b7cc1f8e32a3d2ca23cc2d4df991e96feaa8ee10ecd5ba3c021842607cb85750585a146b9eca4dd54c4cebffd003bd552a982cd3c68622d7d6286f7

Download Submit
C:\Users\Admin\AppData\Local\Temp\bqbubiphod

Filesize
4KB

MD5
891d27523f3e020b2a4a438c2ae80ccb

SHA1
df17db0cb95b25d5f3106d9704f7138bcb6dea58

SHA256
8344dc093d4b4d194df178d6b88fe5266bb95fbb5626f0c191edcf8dad662279

SHA512
73732185648d17558eb9e8c48742cf1d829aa99be74253014c2b00c855e3e1551d3e959c9fa29e3cabfc30d4c8cc5e0ec7471d2ef976a05f624b8754779bb399

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

Filesize
6KB

MD5
aff04f5ef16ed23b7c7b3a15e5ea644a

SHA1
ca4639d4d6c7294c03816943c0a29f4bccf943c3

SHA256
cf56b1b6dde6ae7800d3d1af04c154a5c5c635422cb2417cfc8f29ee665c1359

SHA512
1954c3e6d5ef261effd9de98d862ed429a1bbe7fc8d9c9b18c43c3da4132991a31006ade1a2c06c5c2449782223cb26d52173c9ac18d849ec26f7d458210773a

Download Submit
memory/1208-26-0x0000000006D60000-0x0000000006E9B000-memory.dmp

Filesize
1.2MB

Download
memory/1208-16-0x0000000006490000-0x00000000065F7000-memory.dmp

Filesize
1.4MB

Download
memory/1208-20-0x0000000006D60000-0x0000000006E9B000-memory.dmp

Filesize
1.2MB

Download
memory/1208-31-0x00000000062F0000-0x00000000063E2000-memory.dmp

Filesize
968KB

Download
memory/2256-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2256-15-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2256-18-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2708-9-0x0000000000270000-0x0000000000272000-memory.dmp

Filesize
8KB

Download
memory/2736-25-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/2736-24-0x0000000000670000-0x000000000068C000-memory.dmp

Filesize
112KB

Download
memory/2736-23-0x0000000000670000-0x000000000068C000-memory.dmp

Filesize
112KB

Download

Analysis

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