formbook | 99c56c4551be01e229f63d5159d90f28c0b3fc18e7beae133aeea99a07f7feeb

General

Target

99c56c4551be01e229f63d5159d90f28c0b3fc18e7beae133aeea99a07f7feeb.exe
Size

225KB
MD5

fc978e8e9d20edf8f2a0c4b157fe1920
SHA1

85dee7df3f6c544117cde35c89d058856fa5f559
SHA256

99c56c4551be01e229f63d5159d90f28c0b3fc18e7beae133aeea99a07f7feeb
SHA512

a6796ffb98031e85d7916f40eca661e2bdc7f76b5f29bed8d818420a1a060acf801c965cc347181c81e5458e72751d4c7e464aa4dd2ba4f7f10ca3d13650ec25
SSDEEP

6144:QBn14Fe6S294SbWAClQO5WkuJ9rkKwT/ZUyeok:g4Fe69IQO5+3krFw

Score

10^/10

formbook henz rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

henz

Decoy

IxWMb+jVsoinShuZJzk=

TPfKgQZ//oGnKr/J

EsK0WxD5kY65XOW1Td/5CxSUpCUytR7M

KebSmiCP9p8yUw==

HAt/ljkEuqMLHOLCi53Pv8MKX9qk

CY4ogZTwJc4vSw==

WWDIx5UYUDyepntE0YIAPca3/rI=

+Pkr01Lfb2rME7bL

S5nyK0p8jS2xdwQ=

W/oqvlO57LfkLcLHnQ==

zrrwtqkTLwxulm4l8FGopw==

AqucYext8bzFbOKthIm8E6gfVkUHxKY=

OfnjeDs78+RTcz4OHRl+

XKf1wwpZR5hLLjHgmUGOpQ==

JMyhSLoJPTCwn5o9zX2d8i1+

Wk54MBsDhWSVbnIRkQ==

7aaYR/tOhh9piTw5/KHSRwuK2iqgafw7pQ==

hH/EYxN+jC2xdwQ=

S0F4ORqDjS2xdwQ=

0o/UwXnuJ+sJp0cOHRl+

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Executes dropped EXE 2 IoCs

Processes:

skwwrnzdd.exeskwwrnzdd.exe

pid process

2064 skwwrnzdd.exe
2124 skwwrnzdd.exe

pid	process
2064	skwwrnzdd.exe
2124	skwwrnzdd.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

Processes:

skwwrnzdd.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	skwwrnzdd.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

Suspicious use of SetThreadContext 3 IoCs

Processes:

skwwrnzdd.exeskwwrnzdd.exewscript.exe

description	pid	process	target process
PID 2064 set thread context of 2124	2064	skwwrnzdd.exe	skwwrnzdd.exe
PID 2124 set thread context of 3068	2124	skwwrnzdd.exe	Explorer.EXE
PID 3536 set thread context of 3068	3536	wscript.exe	Explorer.EXE

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

Processes:

wscript.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	wscript.exe

Modifies registry class 3 IoCs

Processes:

Explorer.EXE

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\	Explorer.EXE
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_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

Suspicious behavior: EnumeratesProcesses 62 IoCs

Processes:

skwwrnzdd.exewscript.exe

pid	process
2124	skwwrnzdd.exe
2124	skwwrnzdd.exe
2124	skwwrnzdd.exe
2124	skwwrnzdd.exe
2124	skwwrnzdd.exe
2124	skwwrnzdd.exe
2124	skwwrnzdd.exe
2124	skwwrnzdd.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3068 Explorer.EXE
Suspicious behavior: MapViewOfSection 8 IoCs

Processes:

skwwrnzdd.exeskwwrnzdd.exewscript.exe

pid process

2064 skwwrnzdd.exe
2124 skwwrnzdd.exe
2124 skwwrnzdd.exe
2124 skwwrnzdd.exe
3536 wscript.exe
3536 wscript.exe
3536 wscript.exe
3536 wscript.exe

pid	process
3068	Explorer.EXE

pid	process
2064	skwwrnzdd.exe
2124	skwwrnzdd.exe
2124	skwwrnzdd.exe
2124	skwwrnzdd.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe
3536	wscript.exe

Suspicious use of AdjustPrivilegeToken 32 IoCs

Processes:

skwwrnzdd.exewscript.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	2124	skwwrnzdd.exe
Token: SeDebugPrivilege	3536	wscript.exe
Token: SeShutdownPrivilege	3068	Explorer.EXE
Token: SeCreatePagefilePrivilege	3068	Explorer.EXE
Token: SeShutdownPrivilege	3068	Explorer.EXE
Token: SeCreatePagefilePrivilege	3068	Explorer.EXE
Token: SeShutdownPrivilege	3068	Explorer.EXE
Token: SeCreatePagefilePrivilege	3068	Explorer.EXE
Token: SeShutdownPrivilege	3068	Explorer.EXE
Token: SeCreatePagefilePrivilege	3068	Explorer.EXE
Token: SeShutdownPrivilege	3068	Explorer.EXE
Token: SeCreatePagefilePrivilege	3068	Explorer.EXE
Token: SeShutdownPrivilege	3068	Explorer.EXE
Token: SeCreatePagefilePrivilege	3068	Explorer.EXE
Token: SeShutdownPrivilege	3068	Explorer.EXE
Token: SeCreatePagefilePrivilege	3068	Explorer.EXE
Token: SeShutdownPrivilege	3068	Explorer.EXE
Token: SeCreatePagefilePrivilege	3068	Explorer.EXE
Token: SeShutdownPrivilege	3068	Explorer.EXE
Token: SeCreatePagefilePrivilege	3068	Explorer.EXE
Token: SeShutdownPrivilege	3068	Explorer.EXE
Token: SeCreatePagefilePrivilege	3068	Explorer.EXE
Token: SeShutdownPrivilege	3068	Explorer.EXE
Token: SeCreatePagefilePrivilege	3068	Explorer.EXE
Token: SeShutdownPrivilege	3068	Explorer.EXE
Token: SeCreatePagefilePrivilege	3068	Explorer.EXE
Token: SeShutdownPrivilege	3068	Explorer.EXE
Token: SeCreatePagefilePrivilege	3068	Explorer.EXE
Token: SeShutdownPrivilege	3068	Explorer.EXE
Token: SeCreatePagefilePrivilege	3068	Explorer.EXE
Token: SeShutdownPrivilege	3068	Explorer.EXE
Token: SeCreatePagefilePrivilege	3068	Explorer.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

3068 Explorer.EXE
3068 Explorer.EXE

pid	process
3068	Explorer.EXE
3068	Explorer.EXE

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

99c56c4551be01e229f63d5159d90f28c0b3fc18e7beae133aeea99a07f7feeb.exeskwwrnzdd.exeExplorer.EXEwscript.exe

description	pid	process	target process
PID 4884 wrote to memory of 2064	4884	99c56c4551be01e229f63d5159d90f28c0b3fc18e7beae133aeea99a07f7feeb.exe	skwwrnzdd.exe
PID 4884 wrote to memory of 2064	4884	99c56c4551be01e229f63d5159d90f28c0b3fc18e7beae133aeea99a07f7feeb.exe	skwwrnzdd.exe
PID 4884 wrote to memory of 2064	4884	99c56c4551be01e229f63d5159d90f28c0b3fc18e7beae133aeea99a07f7feeb.exe	skwwrnzdd.exe
PID 2064 wrote to memory of 2124	2064	skwwrnzdd.exe	skwwrnzdd.exe
PID 2064 wrote to memory of 2124	2064	skwwrnzdd.exe	skwwrnzdd.exe
PID 2064 wrote to memory of 2124	2064	skwwrnzdd.exe	skwwrnzdd.exe
PID 2064 wrote to memory of 2124	2064	skwwrnzdd.exe	skwwrnzdd.exe
PID 3068 wrote to memory of 3536	3068	Explorer.EXE	wscript.exe
PID 3068 wrote to memory of 3536	3068	Explorer.EXE	wscript.exe
PID 3068 wrote to memory of 3536	3068	Explorer.EXE	wscript.exe
PID 3536 wrote to memory of 4896	3536	wscript.exe	Firefox.exe
PID 3536 wrote to memory of 4896	3536	wscript.exe	Firefox.exe
PID 3536 wrote to memory of 4896	3536	wscript.exe	Firefox.exe

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 WriteProcessMemory
PID:3068

C:\Users\Admin\AppData\Local\Temp\99c56c4551be01e229f63d5159d90f28c0b3fc18e7beae133aeea99a07f7feeb.exe
"C:\Users\Admin\AppData\Local\Temp\99c56c4551be01e229f63d5159d90f28c0b3fc18e7beae133aeea99a07f7feeb.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:4884

C:\Users\Admin\AppData\Local\Temp\skwwrnzdd.exe
"C:\Users\Admin\AppData\Local\Temp\skwwrnzdd.exe" C:\Users\Admin\AppData\Local\Temp\frlbrtypv.v
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2064

C:\Users\Admin\AppData\Local\Temp\skwwrnzdd.exe
"C:\Users\Admin\AppData\Local\Temp\skwwrnzdd.exe"
4⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:2124

C:\Windows\SysWOW64\wscript.exe
"C:\Windows\SysWOW64\wscript.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:3536

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:4896

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\ejtmlzkrl.wyb
Filesize
185KB

MD5
391a7b2eb7db823d74efa88dd6b3be98

SHA1
812307dc31a8683db86da0fef9355ea26fceb53e

SHA256
44fad663d1e424398b0259a508b2addbdd9379019fe0c75230b5bc3d22de0d65

SHA512
c6f02903231330df64a606893d6bb6e1e16345eae775488b79bb29d1b9528e39dd94ec71052bc011fdda414eb1c741b5f11c80dc7f030c388c124cfca02da31b

Download Submit
C:\Users\Admin\AppData\Local\Temp\frlbrtypv.v
Filesize
5KB

MD5
714bfb709c4f13ceca21eff02316687b

SHA1
164d8b1385c90bb2314e98cda5a57b2c4d02ebd7

SHA256
1741243b58bee7ce1fa356428da1e0adf27da15d7868315b24caabf44351f447

SHA512
03c3f25b0b17377b5217f92ee59f1b104647c01e284342ad97d611da89e3f7508c68d8fa8fa4ede5af4fa13dd9f64d3b64f5377cc8e3b397780093aebcc652a0

Download Submit
C:\Users\Admin\AppData\Local\Temp\skwwrnzdd.exe
Filesize
13KB

MD5
3413430aa1a177d5befe48543e726854

SHA1
adb75fdf8de8aac0f06a8bd65cf874dbbeab5827

SHA256
c6b22738ae5791d67fa73a519d8bb52e269eb591f28320a5b0dde104d32bdb66

SHA512
ff5f07df08419ad777208ff13b359ab6bb07068c584ce150d7f5b33d54f0ae18efbd9161342832da62ac258d65377ea129f4b07df094d140746cfb8e24e8e752

Download Submit
C:\Users\Admin\AppData\Local\Temp\skwwrnzdd.exe
Filesize
13KB

MD5
3413430aa1a177d5befe48543e726854

SHA1
adb75fdf8de8aac0f06a8bd65cf874dbbeab5827

SHA256
c6b22738ae5791d67fa73a519d8bb52e269eb591f28320a5b0dde104d32bdb66

SHA512
ff5f07df08419ad777208ff13b359ab6bb07068c584ce150d7f5b33d54f0ae18efbd9161342832da62ac258d65377ea129f4b07df094d140746cfb8e24e8e752

Download Submit
C:\Users\Admin\AppData\Local\Temp\skwwrnzdd.exe
Filesize
13KB

MD5
3413430aa1a177d5befe48543e726854

SHA1
adb75fdf8de8aac0f06a8bd65cf874dbbeab5827

SHA256
c6b22738ae5791d67fa73a519d8bb52e269eb591f28320a5b0dde104d32bdb66

SHA512
ff5f07df08419ad777208ff13b359ab6bb07068c584ce150d7f5b33d54f0ae18efbd9161342832da62ac258d65377ea129f4b07df094d140746cfb8e24e8e752

Download Submit
memory/2064-132-0x0000000000000000-mapping.dmp

Download
memory/2124-137-0x0000000000000000-mapping.dmp

Download
memory/2124-145-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2124-139-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2124-140-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/2124-141-0x0000000001730000-0x0000000001A7A000-memory.dmp

Filesize
3.3MB

Download
memory/2124-142-0x0000000001140000-0x0000000001150000-memory.dmp

Filesize
64KB

Download
memory/2124-146-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/3068-183-0x0000000000AB0000-0x0000000000AC0000-memory.dmp

Filesize
64KB

Download
memory/3068-172-0x0000000002B30000-0x0000000002B40000-memory.dmp

Filesize
64KB

Download
memory/3068-200-0x0000000002A40000-0x0000000002A50000-memory.dmp

Filesize
64KB

Download
memory/3068-199-0x0000000002A40000-0x0000000002A50000-memory.dmp

Filesize
64KB

Download
memory/3068-198-0x0000000002A40000-0x0000000002A50000-memory.dmp

Filesize
64KB

Download
memory/3068-197-0x0000000002A40000-0x0000000002A50000-memory.dmp

Filesize
64KB

Download
memory/3068-151-0x0000000007D90000-0x0000000007ED7000-memory.dmp

Filesize
1.3MB

Download
memory/3068-196-0x0000000002A40000-0x0000000002A50000-memory.dmp

Filesize
64KB

Download
memory/3068-153-0x0000000007D90000-0x0000000007ED7000-memory.dmp

Filesize
1.3MB

Download
memory/3068-154-0x0000000000AB0000-0x0000000000AC0000-memory.dmp

Filesize
64KB

Download
memory/3068-155-0x0000000000AB0000-0x0000000000AC0000-memory.dmp

Filesize
64KB

Download
memory/3068-156-0x0000000000AB0000-0x0000000000AC0000-memory.dmp

Filesize
64KB

Download
memory/3068-157-0x0000000000AB0000-0x0000000000AC0000-memory.dmp

Filesize
64KB

Download
memory/3068-158-0x0000000000AB0000-0x0000000000AC0000-memory.dmp

Filesize
64KB

Download
memory/3068-159-0x0000000000AB0000-0x0000000000AC0000-memory.dmp

Filesize
64KB

Download
memory/3068-160-0x0000000000AB0000-0x0000000000AC0000-memory.dmp

Filesize
64KB

Download
memory/3068-161-0x0000000000AB0000-0x0000000000AC0000-memory.dmp

Filesize
64KB

Download
memory/3068-162-0x0000000000AB0000-0x0000000000AC0000-memory.dmp

Filesize
64KB

Download
memory/3068-163-0x0000000000AB0000-0x0000000000AC0000-memory.dmp

Filesize
64KB

Download
memory/3068-164-0x0000000000AB0000-0x0000000000AC0000-memory.dmp

Filesize
64KB

Download
memory/3068-165-0x0000000000AB0000-0x0000000000AC0000-memory.dmp

Filesize
64KB

Download
memory/3068-166-0x0000000000AB0000-0x0000000000AC0000-memory.dmp

Filesize
64KB

Download
memory/3068-167-0x0000000000AB0000-0x0000000000AC0000-memory.dmp

Filesize
64KB

Download
memory/3068-168-0x0000000000AB0000-0x0000000000AC0000-memory.dmp

Filesize
64KB

Download
memory/3068-169-0x0000000000AB0000-0x0000000000AC0000-memory.dmp

Filesize
64KB

Download
memory/3068-170-0x0000000000AB0000-0x0000000000AC0000-memory.dmp

Filesize
64KB

Download
memory/3068-171-0x0000000002A90000-0x0000000002AA0000-memory.dmp

Filesize
64KB

Download
memory/3068-195-0x0000000002A40000-0x0000000002A50000-memory.dmp

Filesize
64KB

Download
memory/3068-173-0x0000000002B30000-0x0000000002B40000-memory.dmp

Filesize
64KB

Download
memory/3068-174-0x0000000002B30000-0x0000000002B40000-memory.dmp

Filesize
64KB

Download
memory/3068-175-0x0000000002B30000-0x0000000002B40000-memory.dmp

Filesize
64KB

Download
memory/3068-176-0x0000000000AB0000-0x0000000000AC0000-memory.dmp

Filesize
64KB

Download
memory/3068-177-0x0000000000AB0000-0x0000000000AC0000-memory.dmp

Filesize
64KB

Download
memory/3068-178-0x0000000000AB0000-0x0000000000AC0000-memory.dmp

Filesize
64KB

Download
memory/3068-179-0x0000000000AB0000-0x0000000000AC0000-memory.dmp

Filesize
64KB

Download
memory/3068-180-0x0000000000AB0000-0x0000000000AC0000-memory.dmp

Filesize
64KB

Download
memory/3068-181-0x0000000000AB0000-0x0000000000AC0000-memory.dmp

Filesize
64KB

Download
memory/3068-182-0x0000000000AB0000-0x0000000000AC0000-memory.dmp

Filesize
64KB

Download
memory/3068-143-0x0000000007C90000-0x0000000007D90000-memory.dmp

Filesize
1024KB

Download
memory/3068-184-0x0000000000AB0000-0x0000000000AC0000-memory.dmp

Filesize
64KB

Download
memory/3068-185-0x0000000000AB0000-0x0000000000AC0000-memory.dmp

Filesize
64KB

Download
memory/3068-186-0x0000000000AB0000-0x0000000000AC0000-memory.dmp

Filesize
64KB

Download
memory/3068-187-0x0000000000AB0000-0x0000000000AC0000-memory.dmp

Filesize
64KB

Download
memory/3068-188-0x0000000000AB0000-0x0000000000AC0000-memory.dmp

Filesize
64KB

Download
memory/3068-189-0x0000000000AB0000-0x0000000000AC0000-memory.dmp

Filesize
64KB

Download
memory/3068-190-0x0000000000AB0000-0x0000000000AC0000-memory.dmp

Filesize
64KB

Download
memory/3068-191-0x0000000000AB0000-0x0000000000AC0000-memory.dmp

Filesize
64KB

Download
memory/3068-192-0x0000000000AB0000-0x0000000000AC0000-memory.dmp

Filesize
64KB

Download
memory/3068-193-0x0000000002A40000-0x0000000002A50000-memory.dmp

Filesize
64KB

Download
memory/3068-194-0x0000000002A40000-0x0000000002A50000-memory.dmp

Filesize
64KB

Download
memory/3536-144-0x0000000000000000-mapping.dmp

Download
memory/3536-152-0x0000000000430000-0x000000000045D000-memory.dmp

Filesize
180KB

Download
memory/3536-150-0x0000000002320000-0x00000000023AF000-memory.dmp

Filesize
572KB

Download
memory/3536-149-0x0000000002580000-0x00000000028CA000-memory.dmp

Filesize
3.3MB

Download
memory/3536-148-0x0000000000430000-0x000000000045D000-memory.dmp

Filesize
180KB

Download
memory/3536-147-0x0000000000690000-0x00000000006B7000-memory.dmp

Filesize
156KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads