formbook | 1d05865cde860a1f608fd49bb66177de78e910bb2dc231b57908a388dea5c0c2

General

Target

tmp.exe
Size

226KB
MD5

f30dc6dd8fe2e44bf9b8c45115e6f83c
SHA1

cf0033fda00be69b914807455b696b37c24ad9cf
SHA256

1d05865cde860a1f608fd49bb66177de78e910bb2dc231b57908a388dea5c0c2
SHA512

7116d1742238ee2299f135a9f5d35ed0ff857710eb7c8ca2d99c32cab68ed9b39c906219c3933fc2bdd776319ca13ceebb345b25816898ac347a6eff6c818d72
SSDEEP

3072:qUJoFfWzzl+cSMgi/+Ddy9YOmX3ucUiO0avrbjIO127nn9ubNZnf1wAUYqqRKgsM:qweEp5l9rkuWzcEfn9ySIi+3MuOZW

Score

10^/10

formbook f4ca rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

f4ca

Decoy

omFHB5ajfJi1UEIEV9XcoRw=

UBjJkmQPyprdhcFF/bdCWQ==

evGKkBUj1je+otcfpw==

KgvGVeOATSt3nug0BIOm2JvOQycB

Lv6o3K0r9aSjI0lr9fg1txw=

LH1jJb/HieQpsEdqWCQTvX2PmsDVIeg=

99dte0XauJfk6Xv+uQxJFgA1gMktBA==

21FkkGB9gMniDQw2ffu6

r4lKBM/q6TZwVZfS

F+14qHeVWi56KdQ=

BgWXRsVoICMvvQ==

I+EozFl0Uy56KdQ=

xoXCgEllKEbWfjFCCLo=

qo9G1lXvvGt5GkxrLQWw

ORNlYic0PJ2ip4geEFSv

Yj+GFpvFxy0uVYx1fLI/XQ==

XL+veIKPjOTe4fjvFs+n

D2JKVAfuakXCAyoEvw==

voWJU81tH56wvt/vImbCcgVd

dVEcwFrmb8bZ4vXvFs+n

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Blocklisted process makes network request 2 IoCs

Processes:

cmd.exe

flow pid process

7 1380 cmd.exe
9 1380 cmd.exe
Executes dropped EXE 2 IoCs

Processes:

yuyojlpdd.exeyuyojlpdd.exe

pid process

1220 yuyojlpdd.exe
1520 yuyojlpdd.exe

flow	pid	process
7	1380	cmd.exe
9	1380	cmd.exe

pid	process
1220	yuyojlpdd.exe
1520	yuyojlpdd.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:

yuyojlpdd.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Control Panel\International\Geo\Nation	yuyojlpdd.exe

Loads dropped DLL 3 IoCs

Processes:

tmp.exeyuyojlpdd.execmd.exe

pid process

864 tmp.exe
1220 yuyojlpdd.exe
1380 cmd.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

pid	process
864	tmp.exe
1220	yuyojlpdd.exe
1380	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

yuyojlpdd.exeyuyojlpdd.execmd.exe

description	pid	process	target process
PID 1220 set thread context of 1520	1220	yuyojlpdd.exe	yuyojlpdd.exe
PID 1520 set thread context of 1296	1520	yuyojlpdd.exe	Explorer.EXE
PID 1380 set thread context of 1296	1380	cmd.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:

cmd.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-2292972927-2705560509-2768824231-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cmd.exe

Suspicious behavior: EnumeratesProcesses 26 IoCs

Processes:

yuyojlpdd.execmd.exe

pid	process
1520	yuyojlpdd.exe
1520	yuyojlpdd.exe
1520	yuyojlpdd.exe
1520	yuyojlpdd.exe
1380	cmd.exe
1380	cmd.exe
1380	cmd.exe
1380	cmd.exe
1380	cmd.exe
1380	cmd.exe
1380	cmd.exe
1380	cmd.exe
1380	cmd.exe
1380	cmd.exe
1380	cmd.exe
1380	cmd.exe
1380	cmd.exe
1380	cmd.exe
1380	cmd.exe
1380	cmd.exe
1380	cmd.exe
1380	cmd.exe
1380	cmd.exe
1380	cmd.exe
1380	cmd.exe
1380	cmd.exe

Suspicious behavior: MapViewOfSection 8 IoCs

Processes:

yuyojlpdd.exeyuyojlpdd.execmd.exe

pid process

1220 yuyojlpdd.exe
1520 yuyojlpdd.exe
1520 yuyojlpdd.exe
1520 yuyojlpdd.exe
1380 cmd.exe
1380 cmd.exe
1380 cmd.exe
1380 cmd.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

yuyojlpdd.execmd.exe

description pid process

Token: SeDebugPrivilege 1520 yuyojlpdd.exe
Token: SeDebugPrivilege 1380 cmd.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1296 Explorer.EXE
1296 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1296 Explorer.EXE
1296 Explorer.EXE

pid	process
1220	yuyojlpdd.exe
1520	yuyojlpdd.exe
1520	yuyojlpdd.exe
1520	yuyojlpdd.exe
1380	cmd.exe
1380	cmd.exe
1380	cmd.exe
1380	cmd.exe

description	pid	process
Token: SeDebugPrivilege	1520	yuyojlpdd.exe
Token: SeDebugPrivilege	1380	cmd.exe

pid	process
1296	Explorer.EXE
1296	Explorer.EXE

pid	process
1296	Explorer.EXE
1296	Explorer.EXE

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

tmp.exeyuyojlpdd.exeExplorer.EXEcmd.exe

description	pid	process	target process
PID 864 wrote to memory of 1220	864	tmp.exe	yuyojlpdd.exe
PID 864 wrote to memory of 1220	864	tmp.exe	yuyojlpdd.exe
PID 864 wrote to memory of 1220	864	tmp.exe	yuyojlpdd.exe
PID 864 wrote to memory of 1220	864	tmp.exe	yuyojlpdd.exe
PID 1220 wrote to memory of 1520	1220	yuyojlpdd.exe	yuyojlpdd.exe
PID 1220 wrote to memory of 1520	1220	yuyojlpdd.exe	yuyojlpdd.exe
PID 1220 wrote to memory of 1520	1220	yuyojlpdd.exe	yuyojlpdd.exe
PID 1220 wrote to memory of 1520	1220	yuyojlpdd.exe	yuyojlpdd.exe
PID 1220 wrote to memory of 1520	1220	yuyojlpdd.exe	yuyojlpdd.exe
PID 1296 wrote to memory of 1380	1296	Explorer.EXE	cmd.exe
PID 1296 wrote to memory of 1380	1296	Explorer.EXE	cmd.exe
PID 1296 wrote to memory of 1380	1296	Explorer.EXE	cmd.exe
PID 1296 wrote to memory of 1380	1296	Explorer.EXE	cmd.exe
PID 1380 wrote to memory of 800	1380	cmd.exe	Firefox.exe
PID 1380 wrote to memory of 800	1380	cmd.exe	Firefox.exe
PID 1380 wrote to memory of 800	1380	cmd.exe	Firefox.exe
PID 1380 wrote to memory of 800	1380	cmd.exe	Firefox.exe
PID 1380 wrote to memory of 800	1380	cmd.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1296

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:864

C:\Users\Admin\AppData\Local\Temp\yuyojlpdd.exe
"C:\Users\Admin\AppData\Local\Temp\yuyojlpdd.exe"
3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1220

C:\Users\Admin\AppData\Local\Temp\yuyojlpdd.exe
"C:\Users\Admin\AppData\Local\Temp\yuyojlpdd.exe"
4⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1520

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\SysWOW64\cmd.exe"
2⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1380

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:800

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\uxihpr.zx
Filesize
5KB

MD5
d54e51cfe2eb61eecb8518184631a900

SHA1
a4c20513e75bf1785f4b5658328f7623635f6d53

SHA256
807d62f7c4ec7ff7804a8a88ce0d2f5be710e163d65e6c709ec9f6a675f73d10

SHA512
d0e8397bfaf380622d50aeeb85ae63c3f547a2237f4a5ce43b2f67f79464bbfe46c7f539f1ea42622e7f958aba42375d45d75838bb10403cb398ed61352597f0

Download Submit
C:\Users\Admin\AppData\Local\Temp\wvvuxvn.cc
Filesize
185KB

MD5
91c02a03c98d9b9fcefdf2c006ad2e51

SHA1
00bc63213b18fe2a1e54560e93c74c83837bbdcb

SHA256
014d38ffaa628106fab91c0f5ca1682624b80891f681ddce51a12dd569ff4c89

SHA512
4fb0f6585fb93af610cdfd06eb06c7038fca1e75226fd440d43a7d948e5492621bf25a9bd69271f00029c27a44563bf4ee8f3bc12651407192497567cf120fad

Download Submit
C:\Users\Admin\AppData\Local\Temp\yuyojlpdd.exe
Filesize
8KB

MD5
b4d86ad7d19d5582a1cdd164f173d183

SHA1
62e9ea7e253105348dc04f87f49c5b83fd6abdc6

SHA256
8b034e2390d543fca81b71124c29304ee20a8d053170709fa11f061141ed11d2

SHA512
a512b5161249857d13640dfd1797c8dfd097e42a402ba546f6a4b8e272e3b050f3c2453faa86fe41cdda5a5216d2a50131c0c683ff0bfaf8887ef150a63a0180

Download Submit
C:\Users\Admin\AppData\Local\Temp\yuyojlpdd.exe
Filesize
8KB

MD5
b4d86ad7d19d5582a1cdd164f173d183

SHA1
62e9ea7e253105348dc04f87f49c5b83fd6abdc6

SHA256
8b034e2390d543fca81b71124c29304ee20a8d053170709fa11f061141ed11d2

SHA512
a512b5161249857d13640dfd1797c8dfd097e42a402ba546f6a4b8e272e3b050f3c2453faa86fe41cdda5a5216d2a50131c0c683ff0bfaf8887ef150a63a0180

Download Submit
C:\Users\Admin\AppData\Local\Temp\yuyojlpdd.exe
Filesize
8KB

MD5
b4d86ad7d19d5582a1cdd164f173d183

SHA1
62e9ea7e253105348dc04f87f49c5b83fd6abdc6

SHA256
8b034e2390d543fca81b71124c29304ee20a8d053170709fa11f061141ed11d2

SHA512
a512b5161249857d13640dfd1797c8dfd097e42a402ba546f6a4b8e272e3b050f3c2453faa86fe41cdda5a5216d2a50131c0c683ff0bfaf8887ef150a63a0180

Download Submit
\Users\Admin\AppData\Local\Temp\sqlite3.dll
Filesize
1.1MB

MD5
f55e5766477de5997da50f12c9c74c91

SHA1
4dc98900a887be95411f07b9e597c57bdc7dbab3

SHA256
90be88984ee60864256378c952d44b13d55ac032ab6a7b8c698885176bcece69

SHA512
983417a297e68b58fbd1c07fed7a1697d249110a2c10644b2dc96e3facedd3fbfbcac6a7809631ffd62894f02cadd4d3e62022b9e5e026e5bf434f1eb1878f05

Download Submit
\Users\Admin\AppData\Local\Temp\yuyojlpdd.exe
Filesize
8KB

MD5
b4d86ad7d19d5582a1cdd164f173d183

SHA1
62e9ea7e253105348dc04f87f49c5b83fd6abdc6

SHA256
8b034e2390d543fca81b71124c29304ee20a8d053170709fa11f061141ed11d2

SHA512
a512b5161249857d13640dfd1797c8dfd097e42a402ba546f6a4b8e272e3b050f3c2453faa86fe41cdda5a5216d2a50131c0c683ff0bfaf8887ef150a63a0180

Download Submit
\Users\Admin\AppData\Local\Temp\yuyojlpdd.exe
Filesize
8KB

MD5
b4d86ad7d19d5582a1cdd164f173d183

SHA1
62e9ea7e253105348dc04f87f49c5b83fd6abdc6

SHA256
8b034e2390d543fca81b71124c29304ee20a8d053170709fa11f061141ed11d2

SHA512
a512b5161249857d13640dfd1797c8dfd097e42a402ba546f6a4b8e272e3b050f3c2453faa86fe41cdda5a5216d2a50131c0c683ff0bfaf8887ef150a63a0180

Download Submit
memory/864-54-0x0000000075141000-0x0000000075143000-memory.dmp

Filesize
8KB

Download
memory/1220-56-0x0000000000000000-mapping.dmp

Download
memory/1296-68-0x0000000006A00000-0x0000000006B4D000-memory.dmp

Filesize
1.3MB

Download
memory/1296-77-0x0000000009520000-0x000000000964D000-memory.dmp

Filesize
1.2MB

Download
memory/1296-74-0x0000000009520000-0x000000000964D000-memory.dmp

Filesize
1.2MB

Download
memory/1380-72-0x0000000001FB0000-0x00000000022B3000-memory.dmp

Filesize
3.0MB

Download
memory/1380-69-0x0000000000000000-mapping.dmp

Download
memory/1380-71-0x0000000000080000-0x00000000000AD000-memory.dmp

Filesize
180KB

Download
memory/1380-70-0x000000004A130000-0x000000004A17C000-memory.dmp

Filesize
304KB

Download
memory/1380-73-0x0000000001E50000-0x0000000001EDF000-memory.dmp

Filesize
572KB

Download
memory/1380-75-0x0000000000080000-0x00000000000AD000-memory.dmp

Filesize
180KB

Download
memory/1520-67-0x0000000000120000-0x0000000000130000-memory.dmp

Filesize
64KB

Download
memory/1520-66-0x0000000000A20000-0x0000000000D23000-memory.dmp

Filesize
3.0MB

Download
memory/1520-65-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/1520-64-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1520-62-0x00000000004012B0-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads