formbook | e4b98a029783ce068a262f3393caa28754470082b6b7066f34a27595e5ff2ea2

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
15/11/2022, 12:08

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General

Target
6d1fc60576f650b2806d7e74da8ddd79.exe
Size 316KB
Sample221115-pawkvahe9z
SHA256 e4b98a029783ce068a262f3393caa28754470082b6b7066f34a27595e5ff2ea2
MD5 6d1fc60576f650b2806d7e74da8ddd79
SHA1 e315d5c0868e4a2c8a796e52616cc71fe02f2e4c
SHA512 5e6cb4636df3121435c16d509a717965cdde9823d67876b75217b8346c4de1f5aa37f84eab951db6d5ff1c4ba68954a63a8556c8d872d960705cab759baf2c64
SSDEEP 6144:0Ea0Mr7/9GTiV71Oz7VtsorLQMYN6amP+73M/3Qt9/FvDxxf1lB97Z0V5l3g/Gjh:mr7/9UiV716rLQTNmP+73BpFvDxxdjIZ
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

formbook g2dc rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

g2dc

Decoy

OqIwFVmXHnPUgdurr7I=
0YwewYtWNLZdkF7Q
HFT6VwOYdkifOpbT1h9DcYQ=
D+zGTvGlpriTumzBbw==
gMSID89/QqMV8yjH
HN5/g0/3yJBsnZCig9Qf
Hl33xdRU8xaC1rY=
/rhq03DorPAUH2bSp6228fGQ
gBwzCyfHge9SumzBbw==
NuOmK9+fenLQa9urr7I=
cA4+yKM4IQjpFwMt1BQEUJ1q6y0=
gpK3pqdoVNu93yS0uhocUtQmtQ==
3i3tx82Rf7yQdIyeprA=
FTo+4qVlVK7gIgxi0g3bUA==
7kDtq4wo6+cV8yjH
Dc123pIo9vcNuR9pwkQ0pPpHvQ==
KYREtH0zKNiI374=
Tok2qF4n2XOiRw==
DYFtA6ZXUJfA3MLhRtTVTQ==
C8poIeeskBCxEYHIbQ==
SphQtzv393fpQTmDIBvxFxyuxIK4BJWOUA==
AB4x79KRi4GW5kKig9Qf
IVcHfD3hpGSLl9+IRtTVTQ==
PzAWlDfYi/FTumzBbw==
c8KfRhi+nW2XvNurr7I=
UsixbWn3uiCIyfadTEkZUtQmtQ==
g4pzHPfEqsDb8rw=
r0hgJQncv5PCYr9RvAvxdJM=
yFlw1kAR9tY=
SVpSBeSERrimumzBbw==
uppZPE0xxRFA2yhWqvDARw==
zRjhy+RmLa2WDW7Sp6228fGQ
liYa0MmYn+0fseEDsP5EgcEftw==
MH4a78axhU2Gydurr7I=
2UQv2aEq56DO6iHF
CFomvat2Vcmz09urr7I=
q2kjkxkeyEk/k++FRtTVTQ==
BG5M2sVYFP1V7UOig9Qf
+ibWP/CKeEBw/kaig9Qf
+UsepVwfAGme8WWvyx9DcYQ=
zHJ/UmYN3lGOrY+sNUUaUtQmtQ==
A9rJR+iHRJ8V8yjH
f1c45sZoONiI374=
TaiXlThWwWrIWg==
Gno6rEkmp43vR3d+pas=
YBKzbS8Bi+0Zo/+psqY=
fygs4+dfFHRSbaE+dLAcexvc6t1n
QvyqxGh3/kh3mYnP
ZPYN3O+UTaMV8yjH
hItu96hZQKPkgrjbRtTVTQ==
gYpp/ZKAQpnIWQ==
ryD0gz7Ih29Zh2y3YGI8u/hFFEWMlw==
o1Twr45FQSldcrwZvP8OUtQmtQ==
4QL6n3gqFwRwAkaig9Qf
kN++Zyvv6yJ6ydurr7I=
SdK4Rv6Qb8w4euccuaU=
ve5+E9JwSEMjOWfxfILEq9CY
P6aMLe6ofmKIoO0U2SmtHYI=
8+bJXD3UknPOa9urr7I=
QPyWSRCfXL+mumzBbw==
8ejIbB/mp6G66Ankdw==
n96ZDb2Ab8j2gtYe4x9DcYQ=
XmRT2XUg/1w+Wn1hdH3FMIw=
LN6J745INyFTPR9kCRUX
yogaguerilla.com

Signatures

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

Executes dropped EXE 2 IoCs

pid	Process
4892	efjbvjbax.exe
2980	efjbvjbax.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	efjbvjbax.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4892 set thread context of 2980	4892	efjbvjbax.exe	81
PID 2980 set thread context of 3000	2980	efjbvjbax.exe	38
PID 4904 set thread context of 3000	4904	wlanext.exe	38

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

System Information Discovery
T1082

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	wlanext.exe

Suspicious behavior: EnumeratesProcesses 62 IoCs

pid	Process
2980	efjbvjbax.exe
2980	efjbvjbax.exe
2980	efjbvjbax.exe
2980	efjbvjbax.exe
2980	efjbvjbax.exe
2980	efjbvjbax.exe
2980	efjbvjbax.exe
2980	efjbvjbax.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3000	Explorer.EXE

Suspicious behavior: MapViewOfSection 8 IoCs

pid	Process
4892	efjbvjbax.exe
2980	efjbvjbax.exe
2980	efjbvjbax.exe
2980	efjbvjbax.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe
4904	wlanext.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2980	efjbvjbax.exe
Token: SeDebugPrivilege	4904	wlanext.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 4200 wrote to memory of 4892	4200	6d1fc60576f650b2806d7e74da8ddd79.exe	80
PID 4200 wrote to memory of 4892	4200	6d1fc60576f650b2806d7e74da8ddd79.exe	80
PID 4200 wrote to memory of 4892	4200	6d1fc60576f650b2806d7e74da8ddd79.exe	80
PID 4892 wrote to memory of 2980	4892	efjbvjbax.exe	81
PID 4892 wrote to memory of 2980	4892	efjbvjbax.exe	81
PID 4892 wrote to memory of 2980	4892	efjbvjbax.exe	81
PID 4892 wrote to memory of 2980	4892	efjbvjbax.exe	81
PID 3000 wrote to memory of 4904	3000	Explorer.EXE	82
PID 3000 wrote to memory of 4904	3000	Explorer.EXE	82
PID 3000 wrote to memory of 4904	3000	Explorer.EXE	82
PID 4904 wrote to memory of 4364	4904	wlanext.exe	89
PID 4904 wrote to memory of 4364	4904	wlanext.exe	89
PID 4904 wrote to memory of 4364	4904	wlanext.exe	89

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3000
- C:\Users\Admin\AppData\Local\Temp\6d1fc60576f650b2806d7e74da8ddd79.exe
  "C:\Users\Admin\AppData\Local\Temp\6d1fc60576f650b2806d7e74da8ddd79.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4200
- - C:\Users\Admin\AppData\Local\Temp\efjbvjbax.exe
    "C:\Users\Admin\AppData\Local\Temp\efjbvjbax.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of WriteProcessMemory
    PID:4892
  - - C:\Users\Admin\AppData\Local\Temp\efjbvjbax.exe
      "C:\Users\Admin\AppData\Local\Temp\efjbvjbax.exe"
      4⤵
      Executes dropped EXE
      Checks computer location settings
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:2980
- C:\Windows\SysWOW64\wlanext.exe
  "C:\Windows\SysWOW64\wlanext.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4904
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:4364

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

efjbvjbax.exe

Path C:\Users\Admin\AppData\Local\Temp\efjbvjbax.exe
Size 148KB
SHA256 a555c27d3b29ddfd268c242f74b47e70dff5650425a77eef76cdde22f379dea0
MD5 1e7d3db9174be4b6ef30f6b4badeb9d2
SHA1 c61a0009e2f0604f7878aa73a401d509410f0d75
SHA512 5fadeb1d89e852cfd9079afc0cc9dc1f0588995720b9ce2dcc36d0d273d041fecee6dad845c5fea6dcbdfe6c8b58ff4b4bbe0569ee864e63a5113d8f99299bc3
SSDEEP 3072:Xaaj/glvR8ALCSj0tKJNg/oJGbhDmuEMTO9rLkJESNRcVN8fvcn/jG4ppDqhHZ:vepFyAUbhDmuEYOtLKE6cX/U
MD5 SHA1 SHA512 SSDEEP

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efjbvjbax.exe

Path C:\Users\Admin\AppData\Local\Temp\efjbvjbax.exe
Size 148KB
SHA256 a555c27d3b29ddfd268c242f74b47e70dff5650425a77eef76cdde22f379dea0
MD5 1e7d3db9174be4b6ef30f6b4badeb9d2
SHA1 c61a0009e2f0604f7878aa73a401d509410f0d75
SHA512 5fadeb1d89e852cfd9079afc0cc9dc1f0588995720b9ce2dcc36d0d273d041fecee6dad845c5fea6dcbdfe6c8b58ff4b4bbe0569ee864e63a5113d8f99299bc3
SSDEEP 3072:Xaaj/glvR8ALCSj0tKJNg/oJGbhDmuEMTO9rLkJESNRcVN8fvcn/jG4ppDqhHZ:vepFyAUbhDmuEYOtLKE6cX/U
MD5 SHA1 SHA512 SSDEEP

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efjbvjbax.exe

Path C:\Users\Admin\AppData\Local\Temp\efjbvjbax.exe
Size 148KB
SHA256 a555c27d3b29ddfd268c242f74b47e70dff5650425a77eef76cdde22f379dea0
MD5 1e7d3db9174be4b6ef30f6b4badeb9d2
SHA1 c61a0009e2f0604f7878aa73a401d509410f0d75
SHA512 5fadeb1d89e852cfd9079afc0cc9dc1f0588995720b9ce2dcc36d0d273d041fecee6dad845c5fea6dcbdfe6c8b58ff4b4bbe0569ee864e63a5113d8f99299bc3
SSDEEP 3072:Xaaj/glvR8ALCSj0tKJNg/oJGbhDmuEMTO9rLkJESNRcVN8fvcn/jG4ppDqhHZ:vepFyAUbhDmuEYOtLKE6cX/U
MD5 SHA1 SHA512 SSDEEP

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jtfdyoawp.n

Path C:\Users\Admin\AppData\Local\Temp\jtfdyoawp.n
Size 185KB
SHA256 19cc2a51f253da74af95ad89088dbac472e8a5e23c697f0d430ed5ba331a00aa
MD5 52c16d1552e3a40a5f8cd42f0969cf8e
SHA1 c680e7b89130aff5eeac81a63e32546e14a2af6c
SHA512 a0376e398a42e46de7964d6c32ed51cb60b1cca1a44685fd18decedb185cf34ee7fcd035692fb350e29ffb97da4a54c564360e15fa1c8424544cde74d751d758
SSDEEP 3072:qbagEPIOUWRLrIowzVZ2ZGZ3cTW/rLwbS7/2rI5bVd49UUs2JcH/rHF:aEQO1Ron2+MTAgbWerI5JaWgJcfrHF
MD5 SHA1 SHA512 SSDEEP

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rrsxi.nje

Path C:\Users\Admin\AppData\Local\Temp\rrsxi.nje
Size 5KB
SHA256 ddc537e9d96875d019c772aff294b7b63c796831343c277918585b313a4fb138
MD5 b354743445a48fc1ebfadafc0d0b2e89
SHA1 49a2abd1ca350204be8099457a0e17f73ec5ac59
SHA512 aeb46f91ed117204d31c3140ec74ef7f70f0214ea08c2ca0a0972eaf09bb49998444cdc66552f2d2eb61df079e20cfb3f1563646a2e26c2ab08987c539aecd4b
SSDEEP 96:z7ORushlrjn59vNj+5JffbP9jhhPj0Stkfw4i885SEqH7JB8s87ZQ2:z4ushxz59vx+rffTpjdJepH7p8lP
MD5 SHA1 SHA512 SSDEEP

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memory/2980-142-0x0000000000930000-0x0000000000940000-memory.dmp

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memory/2980-139-0x0000000000400000-0x000000000042F000-memory.dmp

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memory/2980-140-0x0000000000401000-0x000000000042F000-memory.dmp

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memory/2980-141-0x0000000001190000-0x00000000014DA000-memory.dmp

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memory/3000-149-0x0000000008460000-0x0000000008551000-memory.dmp

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memory/3000-143-0x0000000007B00000-0x0000000007BE4000-memory.dmp

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memory/3000-151-0x0000000008460000-0x0000000008551000-memory.dmp

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memory/4904-147-0x0000000000D00000-0x0000000000D2D000-memory.dmp

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memory/4904-148-0x0000000001240000-0x00000000012CF000-memory.dmp

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memory/4904-146-0x00000000014A0000-0x00000000017EA000-memory.dmp

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memory/4904-150-0x0000000000D00000-0x0000000000D2D000-memory.dmp

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memory/4904-145-0x00000000007D0000-0x00000000007E7000-memory.dmp

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