formbook | 45da0328945f01d1928068c9648bc57554b0756226365662e3100cf7b19c7840

General

Target

7015892.exe
Size

252KB
MD5

19990004ebbc8bf180d02aeda8246db9
SHA1

52ec8c08e69bc87e65388341a633670da979de48
SHA256

8f2f6e6735e483a6d8c6aac9817f9bf908e7e63f60a552bb64f8ca77d6c38d0e
SHA512

e1ef258c3b4f6335100c18ab5143785fa6c74575370db64f31eb4e5751bb160f01763f111bf85f4b61b955c8446a3d9a21237cc7a32b9ff17d58df3329f82f06
SSDEEP

6144:7kw+Uw9SO9UWxHVHl4NON8lk1ycJxRqvROk2sf5:kH9P+Wl4k86ykBnsf5

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==

Signatures

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

Processes:

xaxzqjgnle.exexaxzqjgnle.exe

pid process

1928 xaxzqjgnle.exe
400 xaxzqjgnle.exe

pid	process
1928	xaxzqjgnle.exe
400	xaxzqjgnle.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:

xaxzqjgnle.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	xaxzqjgnle.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

Processes:

xaxzqjgnle.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mjcjhsro = "C:\\Users\\Admin\\AppData\\Roaming\\qfqhbbunerh\\iywsehecpdhm.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\xaxzqjgnle.exe\" C:\\Users\\Admin\\AppD"	xaxzqjgnle.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

xaxzqjgnle.exexaxzqjgnle.execscript.exe

description	pid	process	target process
PID 1928 set thread context of 400	1928	xaxzqjgnle.exe	xaxzqjgnle.exe
PID 400 set thread context of 2576	400	xaxzqjgnle.exe	Explorer.EXE
PID 4796 set thread context of 2576	4796	cscript.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:

cscript.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cscript.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

xaxzqjgnle.execscript.exe

pid	process
400	xaxzqjgnle.exe
400	xaxzqjgnle.exe
400	xaxzqjgnle.exe
400	xaxzqjgnle.exe
400	xaxzqjgnle.exe
400	xaxzqjgnle.exe
400	xaxzqjgnle.exe
400	xaxzqjgnle.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

2576 Explorer.EXE
Suspicious behavior: MapViewOfSection 8 IoCs

Processes:

xaxzqjgnle.exexaxzqjgnle.execscript.exe

pid process

1928 xaxzqjgnle.exe
400 xaxzqjgnle.exe
400 xaxzqjgnle.exe
400 xaxzqjgnle.exe
4796 cscript.exe
4796 cscript.exe
4796 cscript.exe
4796 cscript.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

xaxzqjgnle.execscript.exe

description pid process

Token: SeDebugPrivilege 400 xaxzqjgnle.exe
Token: SeDebugPrivilege 4796 cscript.exe

pid	process
2576	Explorer.EXE

pid	process
1928	xaxzqjgnle.exe
400	xaxzqjgnle.exe
400	xaxzqjgnle.exe
400	xaxzqjgnle.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe
4796	cscript.exe

description	pid	process
Token: SeDebugPrivilege	400	xaxzqjgnle.exe
Token: SeDebugPrivilege	4796	cscript.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

7015892.exexaxzqjgnle.exeExplorer.EXEcscript.exe

description	pid	process	target process
PID 960 wrote to memory of 1928	960	7015892.exe	xaxzqjgnle.exe
PID 960 wrote to memory of 1928	960	7015892.exe	xaxzqjgnle.exe
PID 960 wrote to memory of 1928	960	7015892.exe	xaxzqjgnle.exe
PID 1928 wrote to memory of 400	1928	xaxzqjgnle.exe	xaxzqjgnle.exe
PID 1928 wrote to memory of 400	1928	xaxzqjgnle.exe	xaxzqjgnle.exe
PID 1928 wrote to memory of 400	1928	xaxzqjgnle.exe	xaxzqjgnle.exe
PID 1928 wrote to memory of 400	1928	xaxzqjgnle.exe	xaxzqjgnle.exe
PID 2576 wrote to memory of 4796	2576	Explorer.EXE	cscript.exe
PID 2576 wrote to memory of 4796	2576	Explorer.EXE	cscript.exe
PID 2576 wrote to memory of 4796	2576	Explorer.EXE	cscript.exe
PID 4796 wrote to memory of 4404	4796	cscript.exe	Firefox.exe
PID 4796 wrote to memory of 4404	4796	cscript.exe	Firefox.exe
PID 4796 wrote to memory of 4404	4796	cscript.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:2576

C:\Users\Admin\AppData\Local\Temp\7015892.exe
"C:\Users\Admin\AppData\Local\Temp\7015892.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:960

C:\Users\Admin\AppData\Local\Temp\xaxzqjgnle.exe
"C:\Users\Admin\AppData\Local\Temp\xaxzqjgnle.exe" C:\Users\Admin\AppData\Local\Temp\dzwpvwcrqj.oj
3⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1928

C:\Users\Admin\AppData\Local\Temp\xaxzqjgnle.exe
"C:\Users\Admin\AppData\Local\Temp\xaxzqjgnle.exe"
4⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:400

C:\Windows\SysWOW64\cscript.exe
"C:\Windows\SysWOW64\cscript.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:4796

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:4404

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

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\dzwpvwcrqj.oj
Filesize
7KB

MD5
2916b6d518c3bdf5e075d4d508a1c018

SHA1
915b289191f4e7b047d227d4fd5a12f2248516e8

SHA256
d8a93bd1e22142c40e94c6d8194dc0d042dd812512a5ac5dbd90c0fe7e2dcb81

SHA512
2d2e8f4d8a8fd2babaa790cdcf60b526c1183857d8cf697258cd3ffb314c66f28c2f57abd351ead45b7078c0502092a4b5a1d8453f36789238c19e0dab25cc33

Download Submit
C:\Users\Admin\AppData\Local\Temp\xaxzqjgnle.exe
Filesize
49KB

MD5
3c1561af162e360c5c30261cf146e1a7

SHA1
20f9c82d73ca27fca387cee2325cfe4a37bb7fc7

SHA256
11e2b64630e91db573dc2b8d8a3320bcc951bacd2e18be39ea3cc33fa0741a8b

SHA512
61c9ea3710c4cd3e824c9fd1abc9dd22aa804113383ef776790f9dc84b3e1d518325d6e99fa8c3f168460c5f12e5de7373ab03829b2e69a8b216caf26c873bcb

Download Submit
C:\Users\Admin\AppData\Local\Temp\xaxzqjgnle.exe
Filesize
49KB

MD5
3c1561af162e360c5c30261cf146e1a7

SHA1
20f9c82d73ca27fca387cee2325cfe4a37bb7fc7

SHA256
11e2b64630e91db573dc2b8d8a3320bcc951bacd2e18be39ea3cc33fa0741a8b

SHA512
61c9ea3710c4cd3e824c9fd1abc9dd22aa804113383ef776790f9dc84b3e1d518325d6e99fa8c3f168460c5f12e5de7373ab03829b2e69a8b216caf26c873bcb

Download Submit
C:\Users\Admin\AppData\Local\Temp\xaxzqjgnle.exe
Filesize
49KB

MD5
3c1561af162e360c5c30261cf146e1a7

SHA1
20f9c82d73ca27fca387cee2325cfe4a37bb7fc7

SHA256
11e2b64630e91db573dc2b8d8a3320bcc951bacd2e18be39ea3cc33fa0741a8b

SHA512
61c9ea3710c4cd3e824c9fd1abc9dd22aa804113383ef776790f9dc84b3e1d518325d6e99fa8c3f168460c5f12e5de7373ab03829b2e69a8b216caf26c873bcb

Download Submit
C:\Users\Admin\AppData\Local\Temp\yimkomsixc.nuc
Filesize
185KB

MD5
104a836621fab39a6d275bf55d1d0b7a

SHA1
a0b4cb1172a79529f6c23df706008183cadd3acb

SHA256
adfbdaa609481911932ba98dcbacbdbd02feca772617461c7c0eada07f5f5e64

SHA512
2029ab05a88c83f672b2ace0f38eaeefc006fb51f14f6908b4124c6eaa6279a79e04d7f35f558a2eedc4d24ca8f1b2e8efa0562f5b6fac72701746fc6e286cac

Download Submit
memory/400-142-0x00000000001F0000-0x0000000000200000-memory.dmp

Filesize
64KB

Download
memory/400-139-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/400-140-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/400-141-0x0000000000A30000-0x0000000000D7A000-memory.dmp

Filesize
3.3MB

Download
memory/400-137-0x0000000000000000-mapping.dmp

Download
memory/1928-132-0x0000000000000000-mapping.dmp

Download
memory/2576-149-0x0000000008300000-0x0000000008469000-memory.dmp

Filesize
1.4MB

Download
memory/2576-143-0x0000000007260000-0x00000000073B9000-memory.dmp

Filesize
1.3MB

Download
memory/2576-151-0x0000000008300000-0x0000000008469000-memory.dmp

Filesize
1.4MB

Download
memory/4796-144-0x0000000000000000-mapping.dmp

Download
memory/4796-146-0x0000000000940000-0x000000000096D000-memory.dmp

Filesize
180KB

Download
memory/4796-148-0x0000000002820000-0x00000000028AF000-memory.dmp

Filesize
572KB

Download
memory/4796-147-0x00000000029F0000-0x0000000002D3A000-memory.dmp

Filesize
3.3MB

Download
memory/4796-150-0x0000000000940000-0x000000000096D000-memory.dmp

Filesize
180KB

Download
memory/4796-145-0x00000000003F0000-0x0000000000417000-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