27f47faa080d2b9f4c7672b4da78c6410a25b7af5571d3e748f83a01f2144d0a

General

Target

27f47faa080d2b9f4c7672b4da78c6410a25b7af5571d3e748f83a01f2144d0a.exe
Size

884KB
MD5

9129275edf49cff83327c10120a17d7d
SHA1

341d26a56440f86ab4151b7e8f64abab6abb9e0f
SHA256

27f47faa080d2b9f4c7672b4da78c6410a25b7af5571d3e748f83a01f2144d0a
SHA512

a07edbde06a0389b68b96fda94244ed6e911efaca98f8e7f1425e0a5538d2124a361dfd4e2d245edd837759665e7c2e1420b97aba1c9858a12c40e16fb518f18
SSDEEP

24576:bQUQNSnYKZvrfEkOS5bLvotxWFuHmGNvu12qT:cUQNoYozLvvotxguXm

Score

8^/10

spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

Processes:

stealerunc.execsrss.exe

pid process

4868 stealerunc.exe
1552 csrss.exe

pid	process
4868	stealerunc.exe
1552	csrss.exe

Checks computer location settings 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

27f47faa080d2b9f4c7672b4da78c6410a25b7af5571d3e748f83a01f2144d0a.execsrss.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	27f47faa080d2b9f4c7672b4da78c6410a25b7af5571d3e748f83a01f2144d0a.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	csrss.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Reads local data of messenger clients 2 TTPs
Infostealers often target stored data of messaging applications, which can include saved credentials and account information.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
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 1 IoCs

Processes:

stealerunc.exe

description pid process target process

PID 4868 set thread context of 1552 4868 stealerunc.exe csrss.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

4496 timeout.exe

description	pid	process	target process
PID 4868 set thread context of 1552	4868	stealerunc.exe	csrss.exe

pid	process
4496	timeout.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

27f47faa080d2b9f4c7672b4da78c6410a25b7af5571d3e748f83a01f2144d0a.exestealerunc.execsrss.execmd.exe

description	pid	process	target process
PID 3144 wrote to memory of 4868	3144	27f47faa080d2b9f4c7672b4da78c6410a25b7af5571d3e748f83a01f2144d0a.exe	stealerunc.exe
PID 3144 wrote to memory of 4868	3144	27f47faa080d2b9f4c7672b4da78c6410a25b7af5571d3e748f83a01f2144d0a.exe	stealerunc.exe
PID 3144 wrote to memory of 4868	3144	27f47faa080d2b9f4c7672b4da78c6410a25b7af5571d3e748f83a01f2144d0a.exe	stealerunc.exe
PID 4868 wrote to memory of 1552	4868	stealerunc.exe	csrss.exe
PID 4868 wrote to memory of 1552	4868	stealerunc.exe	csrss.exe
PID 4868 wrote to memory of 1552	4868	stealerunc.exe	csrss.exe
PID 4868 wrote to memory of 1552	4868	stealerunc.exe	csrss.exe
PID 4868 wrote to memory of 1552	4868	stealerunc.exe	csrss.exe
PID 4868 wrote to memory of 1552	4868	stealerunc.exe	csrss.exe
PID 4868 wrote to memory of 1552	4868	stealerunc.exe	csrss.exe
PID 4868 wrote to memory of 1552	4868	stealerunc.exe	csrss.exe
PID 4868 wrote to memory of 1552	4868	stealerunc.exe	csrss.exe
PID 4868 wrote to memory of 1552	4868	stealerunc.exe	csrss.exe
PID 4868 wrote to memory of 1552	4868	stealerunc.exe	csrss.exe
PID 1552 wrote to memory of 4004	1552	csrss.exe	cmd.exe
PID 1552 wrote to memory of 4004	1552	csrss.exe	cmd.exe
PID 1552 wrote to memory of 4004	1552	csrss.exe	cmd.exe
PID 4004 wrote to memory of 4496	4004	cmd.exe	timeout.exe
PID 4004 wrote to memory of 4496	4004	cmd.exe	timeout.exe
PID 4004 wrote to memory of 4496	4004	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\27f47faa080d2b9f4c7672b4da78c6410a25b7af5571d3e748f83a01f2144d0a.exe
"C:\Users\Admin\AppData\Local\Temp\27f47faa080d2b9f4c7672b4da78c6410a25b7af5571d3e748f83a01f2144d0a.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3144

C:\Users\Admin\AppData\Local\Temp\stealerunc.exe
"C:\Users\Admin\AppData\Local\Temp\stealerunc.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4868

C:\Users\Admin\AppData\Roaming\csrss.exe
C:\Users\Admin\AppData\Roaming\csrss.exe
3⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1552

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout 5 && del C:\Users\Admin\AppData\Local\Temp\STEALE~1.EXE
4⤵
- Suspicious use of WriteProcessMemory
PID:4004

C:\Windows\SysWOW64\timeout.exe
timeout 5
5⤵
- Delays execution with timeout.exe
PID:4496

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

3

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

3

T1005

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\stealerunc.exe
Filesize
552KB

MD5
9f8f31df7b0b9b8645566f4ac1ca01e3

SHA1
2105930b6c90e84cfa42650f3b3dd08f9091195f

SHA256
b42e8b3e33db6373dfd95d473b98ac5de50b1e0103cb0b4c6e30c2746fdc563c

SHA512
734947b24dfbb4d5782cafd48d064ae39f6fb57e930704868afbe64cf511ba08409de6c36c58fafef2e4a0637730b5bbd2d09af9a6dcaaabcef7afa61c5af71d

Download Submit
C:\Users\Admin\AppData\Local\Temp\stealerunc.exe
Filesize
552KB

MD5
9f8f31df7b0b9b8645566f4ac1ca01e3

SHA1
2105930b6c90e84cfa42650f3b3dd08f9091195f

SHA256
b42e8b3e33db6373dfd95d473b98ac5de50b1e0103cb0b4c6e30c2746fdc563c

SHA512
734947b24dfbb4d5782cafd48d064ae39f6fb57e930704868afbe64cf511ba08409de6c36c58fafef2e4a0637730b5bbd2d09af9a6dcaaabcef7afa61c5af71d

Download Submit
C:\Users\Admin\AppData\Roaming\csrss.exe
MD5
d41d8cd98f00b204e9800998ecf8427e

SHA1
da39a3ee5e6b4b0d3255bfef95601890afd80709

SHA256
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

SHA512
cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

Download Submit
C:\Users\Admin\AppData\Roaming\csrss.exe
Filesize
34KB

MD5
e118330b4629b12368d91b9df6488be0

SHA1
ce90218c7e3b90df2a3409ec253048bb6472c2fd

SHA256
3a0f2936b8c45e8ba3458d69d7859a63844469e698652e15fb56639d32f40cc9

SHA512
ac91c04cb20223dbaaf594440cb778dff36e857921be427c8528ba4c6cdb3e8bf8e71e1ae8af7bde9c04ff5b97b379231625bc1a2b66aba2f98cd340cd8a94b0

Download Submit
C:\Users\Admin\AppData\Roaming\csrss.exe
Filesize
34KB

MD5
e118330b4629b12368d91b9df6488be0

SHA1
ce90218c7e3b90df2a3409ec253048bb6472c2fd

SHA256
3a0f2936b8c45e8ba3458d69d7859a63844469e698652e15fb56639d32f40cc9

SHA512
ac91c04cb20223dbaaf594440cb778dff36e857921be427c8528ba4c6cdb3e8bf8e71e1ae8af7bde9c04ff5b97b379231625bc1a2b66aba2f98cd340cd8a94b0

Download Submit
memory/1552-145-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/1552-139-0x0000000000000000-mapping.dmp

Download
memory/1552-140-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/1552-144-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/1552-148-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/3144-136-0x0000000075270000-0x0000000075821000-memory.dmp

Filesize
5.7MB

Download
memory/3144-132-0x0000000075270000-0x0000000075821000-memory.dmp

Filesize
5.7MB

Download
memory/4004-147-0x0000000000000000-mapping.dmp

Download
memory/4496-149-0x0000000000000000-mapping.dmp

Download
memory/4868-137-0x0000000075270000-0x0000000075821000-memory.dmp

Filesize
5.7MB

Download
memory/4868-133-0x0000000000000000-mapping.dmp

Download
memory/4868-146-0x0000000075270000-0x0000000075821000-memory.dmp

Filesize
5.7MB

Download

Analysis

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