formbook | 6a7b8ed7f2cfe7f8a3030df54f1ba443025c54e5a15d416469aac2a696d7bf1d

Analysis

max time kernel
206s
max time network
211s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
06/12/2022, 08:50

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General

Target
Consignment Notification- 705643291.exe
Size 226KB
Sample221206-krldzsbe97
SHA256 6a7b8ed7f2cfe7f8a3030df54f1ba443025c54e5a15d416469aac2a696d7bf1d
MD5 a60cbdaf4f35894d7970f9bcf606acfa
SHA1 fe4a22af06fb8d122065dfb0683a7dd9c6baae9a
SHA512 7b9822089f6251b116e589140473e8f671568bd45b954c505ab77163210594fd4a4b0905d9dce3b601d50ee217e8f4c06f9fc05cae84873b2498f8c1d3d7b323
SSDEEP 3072:QEhKzShSycSMIZLq4ziw2z2nsfvTdob43u27OP4XrefAKNdOR6XgrhedPZphUYk:QBn1Ig4DvNb43m4qO4Qr85k
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

formbook yurm persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

yurm

Decoy

X06d1tis1GUX/R0g87Ud
BKiZ33D1P766GVXO1ZwV
lAFdjB7CSxGX8Trz
Gc7dWizTVxWX8Trz
tDkr9JAfi1OHAW1PGOageIp4
bCpMtHKU3mVp8BY5sQ==
7WKpsMWt8nsrhJClJeOZNg==
0A9KTlETQ86Cmd8k0o5NP5RwCg==
aJ61paNJztSp42c=
CrgoA8ySIOsytCbO1ZwV
i46SnHYDD9tTIHI=
XFRCRCjtFZeU3x4Rn3xfD5BnPz+RDA==
c4CZghuHvzW9A31gEz0d
QAjzz9qyRRWBNYseAI4M
Jpbmu4A1YvBvN3ruZgiRmJA5BCFd
PfoFXGNFhhuX8Trz
bqCfk0m8ApAl+Tm1Ms5Tb23IT7tS
z7INff7HNALxc5HWq2/ftrVR6A7R1zvTUQ==
m7IShV4LSFxbqxhrVsZ1Ig==
BHRp7q0gtoRuqBRnVsZ1Ig==
SnqEhE/pEKitAVYv+MtfgDwL1EuxZyihRg==
1xpDKRHJ7K/tqQzEfaJvDIeRWI5DZyihRg==
tAQpBfGi8mppxC4LbDQNI945BCFd
nk5kz8aKDecavxHOYeugeIp4
wPYvLS3zK8FvdJFbQVY=
WAATk07VS0xU9Dvx
KdwXaxSYC9G8DG2tUOBR/X3wtEM=
EPQVcwx5eXw9i/E3B9tpP5RwCg==
MN0FmlPPDZiu5zVpA58wA0Q/5F4=
797QsL+c/saMxtZeQFQ=
TISijiWfydvQFQ==
ama7D8Ntnxsr9Gg=
PcnRSFMPjGFm8BY5sQ==
npSIXvRrsj25h91pUHZGbX3wtEM=
0CAJglT6dkKyhZFbQVY=
kL69pLud0pT4Am0=
sG1JDgXWXydt/VHO1ZwV
zxVdYWYhqoHvrt5W2G7a5PL71zEyHIIx
i0Zm9MhPh/vvI3ycVsZ1Ig==
kjRJqKB3nRgihH2kM0E=
/s4LgD5dmCtOBCkprA==
I278sNm5/o/FX2dZBAKYKg==
eP/5flDtVw2X8Trz
Ik9oUEj8hFO6eeK1gJg/xkILDkwPAw==
QIS5jUjlUhtr/VHO1ZwV
RcC5QQyGv0mFC2BnT3igeIp4
NL7LMCoKT93dJWVTHJgywToxAg==
yzhyPgzSYDGthZFbQVY=
PqmV5ObKBpvKUJZYcGg05HtiCA==
/W9bsq7IsDuC
T8LMKrI2jA8BQ4yQVsZ1Ig==
eHof90VMPMXQDQ==
8TSLglnyajdx/VDO1ZwV
ZQYihA2I+rn4g7eQVsZ1Ig==
JCmxphUQ06is5Gc=
H2C6sYYiZPAxoxNnVsZ1Ig==
5NxIrpR6DM2Jd5FbQVY=
vDCXqaJj6Pw2EXA=
CBI+Gdh67Pw2EXA=
zxoDhkPEDpTET7a6Os0tj1BpDBfmYgo=
neEtD8Y0YN7fMV7O1ZwV
W+BPJ/S6QhmScpFbQVY=
iAZaRHA3ZgUpsQvRiZ5XP5RwCg==
CQtXS8LIsDuC
absbox.org

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
1400	ttwutb.exe
3480	ttwutb.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-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	ttwutb.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rxbbmtrp = "C:\\Users\\Admin\\AppData\\Roaming\\tggsconknigc\\wdvr.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\ttwutb.exe\" C:\\Users\\Admin\\AppData\\Local\\T"	ttwutb.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 1400 set thread context of 3480	1400	ttwutb.exe	82
PID 3480 set thread context of 1192	3480	ttwutb.exe	55
PID 3480 set thread context of 1192	3480	ttwutb.exe	55
PID 4368 set thread context of 1192	4368	cmd.exe	55

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-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cmd.exe

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\	Explorer.EXE
Key created	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 52 IoCs

pid	Process
3480	ttwutb.exe
3480	ttwutb.exe
3480	ttwutb.exe
3480	ttwutb.exe
3480	ttwutb.exe
3480	ttwutb.exe
3480	ttwutb.exe
3480	ttwutb.exe
3480	ttwutb.exe
3480	ttwutb.exe
4368	cmd.exe
4368	cmd.exe
4368	cmd.exe
4368	cmd.exe
4368	cmd.exe
4368	cmd.exe
4368	cmd.exe
4368	cmd.exe
4368	cmd.exe
4368	cmd.exe
4368	cmd.exe
4368	cmd.exe
4368	cmd.exe
4368	cmd.exe
4368	cmd.exe
4368	cmd.exe
4368	cmd.exe
4368	cmd.exe
4368	cmd.exe
4368	cmd.exe
4368	cmd.exe
4368	cmd.exe
4368	cmd.exe
4368	cmd.exe
4368	cmd.exe
4368	cmd.exe
4368	cmd.exe
4368	cmd.exe
4368	cmd.exe
4368	cmd.exe
4368	cmd.exe
4368	cmd.exe
4368	cmd.exe
4368	cmd.exe
4368	cmd.exe
4368	cmd.exe
4368	cmd.exe
4368	cmd.exe
4368	cmd.exe
4368	cmd.exe
4368	cmd.exe
4368	cmd.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1192	Explorer.EXE

Suspicious behavior: MapViewOfSection 9 IoCs

pid	Process
1400	ttwutb.exe
3480	ttwutb.exe
3480	ttwutb.exe
3480	ttwutb.exe
3480	ttwutb.exe
4368	cmd.exe
4368	cmd.exe
4368	cmd.exe
4368	cmd.exe

Suspicious use of AdjustPrivilegeToken 14 IoCs

description	pid	Process
Token: SeDebugPrivilege	3480	ttwutb.exe
Token: SeDebugPrivilege	4368	cmd.exe
Token: SeShutdownPrivilege	1192	Explorer.EXE
Token: SeCreatePagefilePrivilege	1192	Explorer.EXE
Token: SeShutdownPrivilege	1192	Explorer.EXE
Token: SeCreatePagefilePrivilege	1192	Explorer.EXE
Token: SeShutdownPrivilege	1192	Explorer.EXE
Token: SeCreatePagefilePrivilege	1192	Explorer.EXE
Token: SeShutdownPrivilege	1192	Explorer.EXE
Token: SeCreatePagefilePrivilege	1192	Explorer.EXE
Token: SeShutdownPrivilege	1192	Explorer.EXE
Token: SeCreatePagefilePrivilege	1192	Explorer.EXE
Token: SeShutdownPrivilege	1192	Explorer.EXE
Token: SeCreatePagefilePrivilege	1192	Explorer.EXE

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 372 wrote to memory of 1400	372	Consignment Notification- 705643291.exe	81
PID 372 wrote to memory of 1400	372	Consignment Notification- 705643291.exe	81
PID 372 wrote to memory of 1400	372	Consignment Notification- 705643291.exe	81
PID 1400 wrote to memory of 3480	1400	ttwutb.exe	82
PID 1400 wrote to memory of 3480	1400	ttwutb.exe	82
PID 1400 wrote to memory of 3480	1400	ttwutb.exe	82
PID 1400 wrote to memory of 3480	1400	ttwutb.exe	82
PID 3480 wrote to memory of 4368	3480	ttwutb.exe	85
PID 3480 wrote to memory of 4368	3480	ttwutb.exe	85
PID 3480 wrote to memory of 4368	3480	ttwutb.exe	85
PID 1192 wrote to memory of 3948	1192	Explorer.EXE	84
PID 1192 wrote to memory of 3948	1192	Explorer.EXE	84
PID 1192 wrote to memory of 3948	1192	Explorer.EXE	84
PID 4368 wrote to memory of 4696	4368	cmd.exe	88
PID 4368 wrote to memory of 4696	4368	cmd.exe	88
PID 4368 wrote to memory of 4696	4368	cmd.exe	88

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1192
- C:\Users\Admin\AppData\Local\Temp\Consignment Notification- 705643291.exe
  "C:\Users\Admin\AppData\Local\Temp\Consignment Notification- 705643291.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:372
- - C:\Users\Admin\AppData\Local\Temp\ttwutb.exe
    "C:\Users\Admin\AppData\Local\Temp\ttwutb.exe" C:\Users\Admin\AppData\Local\Temp\afoqzcrkmi.d
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious use of SetThreadContext
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of WriteProcessMemory
    PID:1400
  - - C:\Users\Admin\AppData\Local\Temp\ttwutb.exe
      "C:\Users\Admin\AppData\Local\Temp\ttwutb.exe"
      4⤵
      Executes dropped EXE
      Checks computer location settings
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:3480
    - - C:\Windows\SysWOW64\autoconv.exe
        
        "C:\Windows\SysWOW64\autoconv.exe"
        5⤵
        
        PID:1728
    - - C:\Windows\SysWOW64\cmd.exe
        
        "C:\Windows\SysWOW64\cmd.exe"
        5⤵
        Suspicious use of SetThreadContext
        Modifies Internet Explorer settings
        Suspicious behavior: EnumeratesProcesses
        Suspicious behavior: MapViewOfSection
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:4368
      - C:\Program Files\Mozilla Firefox\Firefox.exe
        
        "C:\Program Files\Mozilla Firefox\Firefox.exe"
        6⤵
        
        PID:4696
- C:\Windows\SysWOW64\control.exe
  "C:\Windows\SysWOW64\control.exe"
  2⤵
  PID:3948

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

afoqzcrkmi.d

Path C:\Users\Admin\AppData\Local\Temp\afoqzcrkmi.d
Size 7KB
SHA256 c89f088d54d301f9cc16c0380610ebacfd6152d243588aa114846823860a3cc6
MD5 a5a31e3a62c832cb29d0bd27f3f42e8f
SHA1 303acc0d5a2b69ce4e6c5237461db0a2735339c4
SHA512 bca692d56f5273c69b927fccc08791e22732909cfe77b81d0f10cf11aee4f94f1c73922a370cabc009b3b516c0c6cc5e538d0bb11e03e5d84ef66f31079f993b
SSDEEP 192:sSasPWb1o3A9+n/TXCERvefh3IgnyXiwdiDk8g7ySHA:sFgWOQAn7yERoSXiwsA57ySg
MD5 SHA1 SHA512 SSDEEP

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asbvcpwfsu.nzh

Path C:\Users\Admin\AppData\Local\Temp\asbvcpwfsu.nzh
Size 185KB
SHA256 999741981cec391c06e6ac4b5e33168e5f04e4f1340d64c7f74d2456ab01565e
MD5 0c54a02e01b246d54a350c2421a9978e
SHA1 18d49d992eef55a62d8c1b48ddf32ae21c7bdfe8
SHA512 6ecc204cc6b8434dedeae9682728d441a461123619c005204c0f30fb3f2d3a56501bcdd67df6ed7e1ca773fc1b36ad525bb747b2c4d3d7c0b62ae0c9c5ade918
SSDEEP 3072:IxiwaQfPKd8wWJeLACa4SEjEyVxnPK9Uk2KTTJXAcIih95/qe4RS73tf:IgwaQfCd2AACa45EyVxnu3dA+v/nh
MD5 SHA1 SHA512 SSDEEP

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ttwutb.exe

Path C:\Users\Admin\AppData\Local\Temp\ttwutb.exe
Size 12KB
SHA256 0effb6bcc873119c07e3a4544297b28da24e5cb1e64567998b4a6ccd46bd2da6
MD5 aafd9dbfd8f3255c05ed6a4a2e9cdaaf
SHA1 c3fdbb2b60791515f63e65a36b07a9d1904f6957
SHA512 9025bb8df8f06ea2378040655717d9d367a0b8c827f31c337cc6430683b169b4c2b70cf82cd247fa6534e2759424902dfc70f70e6c7a8cb8189ce94d7ca1bbc5
SSDEEP 192:nc26a0ZQgwMI7A8x47TlDU5K+KmqnzJhGIY8gllwJ3NFBjCXrOi:ncLzZQgxI7AM47ACzmlAWrO
MD5 SHA1 SHA512 SSDEEP

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ttwutb.exe

Path C:\Users\Admin\AppData\Local\Temp\ttwutb.exe
Size 12KB
SHA256 0effb6bcc873119c07e3a4544297b28da24e5cb1e64567998b4a6ccd46bd2da6
MD5 aafd9dbfd8f3255c05ed6a4a2e9cdaaf
SHA1 c3fdbb2b60791515f63e65a36b07a9d1904f6957
SHA512 9025bb8df8f06ea2378040655717d9d367a0b8c827f31c337cc6430683b169b4c2b70cf82cd247fa6534e2759424902dfc70f70e6c7a8cb8189ce94d7ca1bbc5
SSDEEP 192:nc26a0ZQgwMI7A8x47TlDU5K+KmqnzJhGIY8gllwJ3NFBjCXrOi:ncLzZQgxI7AM47ACzmlAWrO
MD5 SHA1 SHA512 SSDEEP

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ttwutb.exe

Path C:\Users\Admin\AppData\Local\Temp\ttwutb.exe
Size 12KB
SHA256 0effb6bcc873119c07e3a4544297b28da24e5cb1e64567998b4a6ccd46bd2da6
MD5 aafd9dbfd8f3255c05ed6a4a2e9cdaaf
SHA1 c3fdbb2b60791515f63e65a36b07a9d1904f6957
SHA512 9025bb8df8f06ea2378040655717d9d367a0b8c827f31c337cc6430683b169b4c2b70cf82cd247fa6534e2759424902dfc70f70e6c7a8cb8189ce94d7ca1bbc5
SSDEEP 192:nc26a0ZQgwMI7A8x47TlDU5K+KmqnzJhGIY8gllwJ3NFBjCXrOi:ncLzZQgxI7AM47ACzmlAWrO
MD5 SHA1 SHA512 SSDEEP

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memory/1192-143-0x00000000081B0000-0x0000000008297000-memory.dmp

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memory/1192-155-0x0000000008A60000-0x0000000008BD6000-memory.dmp

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memory/1192-153-0x0000000008A60000-0x0000000008BD6000-memory.dmp

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memory/1192-145-0x00000000082A0000-0x00000000083FB000-memory.dmp

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memory/3480-144-0x0000000001360000-0x0000000001370000-memory.dmp

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memory/3480-139-0x0000000000400000-0x000000000042F000-memory.dmp

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memory/3480-141-0x0000000000FD0000-0x000000000131A000-memory.dmp

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memory/3480-140-0x0000000000401000-0x000000000042F000-memory.dmp

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memory/3480-146-0x0000000000400000-0x000000000042F000-memory.dmp

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memory/3480-147-0x0000000000401000-0x000000000042F000-memory.dmp

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memory/3480-142-0x0000000000A80000-0x0000000000A90000-memory.dmp

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memory/4368-149-0x00000000005F0000-0x000000000064A000-memory.dmp

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memory/4368-151-0x00000000011B0000-0x00000000014FA000-memory.dmp

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memory/4368-152-0x0000000000FD0000-0x000000000105F000-memory.dmp

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memory/4368-150-0x0000000000580000-0x00000000005AD000-memory.dmp

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memory/4368-154-0x0000000000580000-0x00000000005AD000-memory.dmp

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