Analysis
-
max time kernel
150s -
max time network
131s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
11-03-2023 11:31
Static task
static1
Behavioral task
behavioral1
Sample
8f04f8e4f87a7e19053f745b6fbcb795.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
8f04f8e4f87a7e19053f745b6fbcb795.exe
Resource
win10v2004-20230220-en
General
-
Target
8f04f8e4f87a7e19053f745b6fbcb795.exe
-
Size
2.4MB
-
MD5
8f04f8e4f87a7e19053f745b6fbcb795
-
SHA1
5207f1704c26b19ab175882ab03a13aa42f88f48
-
SHA256
3944a1d4b4fdf0b1a5aecaa579a3c9acac4536544b440acc8362d456f46d3cb4
-
SHA512
89d372996ecf01293d69267b4c151e59a4dca3968c9f28d5795d620a45232b2ccd3aa29aa87eb540c44d06541d90dbfd5c020c77a0d850e5a4f0eee063a9fe5a
-
SSDEEP
49152:Lp7dJRVGJ0vXg055FGLXBFC/tU6aqws96MayXjq7262LMJfS4h1Y:Lp7dJR0+vXg055FSXBFC1gq9kM3zm0MG
Malware Config
Extracted
redline
red1
34.141.168.40:80
34.125.68.133:80
-
auth_value
70f607e482f39051bebe438c28d43e46
Signatures
-
Detect PureCrypter injector 33 IoCs
resource yara_rule behavioral2/memory/4040-134-0x0000000005490000-0x00000000056F2000-memory.dmp family_purecrypter behavioral2/memory/4040-135-0x0000000005490000-0x00000000056F2000-memory.dmp family_purecrypter behavioral2/memory/4040-137-0x0000000005490000-0x00000000056F2000-memory.dmp family_purecrypter behavioral2/memory/4040-139-0x0000000005490000-0x00000000056F2000-memory.dmp family_purecrypter behavioral2/memory/4040-141-0x0000000005490000-0x00000000056F2000-memory.dmp family_purecrypter behavioral2/memory/4040-143-0x0000000005490000-0x00000000056F2000-memory.dmp family_purecrypter behavioral2/memory/4040-145-0x0000000005490000-0x00000000056F2000-memory.dmp family_purecrypter behavioral2/memory/4040-147-0x0000000005490000-0x00000000056F2000-memory.dmp family_purecrypter behavioral2/memory/4040-149-0x0000000005490000-0x00000000056F2000-memory.dmp family_purecrypter behavioral2/memory/4040-151-0x0000000005490000-0x00000000056F2000-memory.dmp family_purecrypter behavioral2/memory/4040-153-0x0000000005490000-0x00000000056F2000-memory.dmp family_purecrypter behavioral2/memory/4040-155-0x0000000005490000-0x00000000056F2000-memory.dmp family_purecrypter behavioral2/memory/4040-157-0x0000000005490000-0x00000000056F2000-memory.dmp family_purecrypter behavioral2/memory/4040-159-0x0000000005490000-0x00000000056F2000-memory.dmp family_purecrypter behavioral2/memory/4040-161-0x0000000005490000-0x00000000056F2000-memory.dmp family_purecrypter behavioral2/memory/4040-163-0x0000000005490000-0x00000000056F2000-memory.dmp family_purecrypter behavioral2/memory/4040-165-0x0000000005490000-0x00000000056F2000-memory.dmp family_purecrypter behavioral2/memory/4040-167-0x0000000005490000-0x00000000056F2000-memory.dmp family_purecrypter behavioral2/memory/4040-169-0x0000000005490000-0x00000000056F2000-memory.dmp family_purecrypter behavioral2/memory/4040-171-0x0000000005490000-0x00000000056F2000-memory.dmp family_purecrypter behavioral2/memory/4040-173-0x0000000005490000-0x00000000056F2000-memory.dmp family_purecrypter behavioral2/memory/4040-175-0x0000000005490000-0x00000000056F2000-memory.dmp family_purecrypter behavioral2/memory/4040-177-0x0000000005490000-0x00000000056F2000-memory.dmp family_purecrypter behavioral2/memory/4040-179-0x0000000005490000-0x00000000056F2000-memory.dmp family_purecrypter behavioral2/memory/4040-181-0x0000000005490000-0x00000000056F2000-memory.dmp family_purecrypter behavioral2/memory/4040-183-0x0000000005490000-0x00000000056F2000-memory.dmp family_purecrypter behavioral2/memory/4040-185-0x0000000005490000-0x00000000056F2000-memory.dmp family_purecrypter behavioral2/memory/4040-187-0x0000000005490000-0x00000000056F2000-memory.dmp family_purecrypter behavioral2/memory/4040-189-0x0000000005490000-0x00000000056F2000-memory.dmp family_purecrypter behavioral2/memory/4040-191-0x0000000005490000-0x00000000056F2000-memory.dmp family_purecrypter behavioral2/memory/4040-193-0x0000000005490000-0x00000000056F2000-memory.dmp family_purecrypter behavioral2/memory/4040-195-0x0000000005490000-0x00000000056F2000-memory.dmp family_purecrypter behavioral2/memory/4040-197-0x0000000005490000-0x00000000056F2000-memory.dmp family_purecrypter -
PureCrypter
PureCrypter is a .NET malware loader first seen in early 2021.
-
RedLine
RedLine Stealer is a malware family written in C#, first appearing in early 2020.
-
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Control Panel\International\Geo\Nation 8f04f8e4f87a7e19053f745b6fbcb795.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 4040 set thread context of 1484 4040 8f04f8e4f87a7e19053f745b6fbcb795.exe 95 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
-
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 208 powershell.exe 208 powershell.exe 4040 8f04f8e4f87a7e19053f745b6fbcb795.exe 4040 8f04f8e4f87a7e19053f745b6fbcb795.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 4040 8f04f8e4f87a7e19053f745b6fbcb795.exe Token: SeDebugPrivilege 208 powershell.exe -
Suspicious use of WriteProcessMemory 14 IoCs
description pid Process procid_target PID 4040 wrote to memory of 208 4040 8f04f8e4f87a7e19053f745b6fbcb795.exe 92 PID 4040 wrote to memory of 208 4040 8f04f8e4f87a7e19053f745b6fbcb795.exe 92 PID 4040 wrote to memory of 208 4040 8f04f8e4f87a7e19053f745b6fbcb795.exe 92 PID 4040 wrote to memory of 1472 4040 8f04f8e4f87a7e19053f745b6fbcb795.exe 94 PID 4040 wrote to memory of 1472 4040 8f04f8e4f87a7e19053f745b6fbcb795.exe 94 PID 4040 wrote to memory of 1472 4040 8f04f8e4f87a7e19053f745b6fbcb795.exe 94 PID 4040 wrote to memory of 1484 4040 8f04f8e4f87a7e19053f745b6fbcb795.exe 95 PID 4040 wrote to memory of 1484 4040 8f04f8e4f87a7e19053f745b6fbcb795.exe 95 PID 4040 wrote to memory of 1484 4040 8f04f8e4f87a7e19053f745b6fbcb795.exe 95 PID 4040 wrote to memory of 1484 4040 8f04f8e4f87a7e19053f745b6fbcb795.exe 95 PID 4040 wrote to memory of 1484 4040 8f04f8e4f87a7e19053f745b6fbcb795.exe 95 PID 4040 wrote to memory of 1484 4040 8f04f8e4f87a7e19053f745b6fbcb795.exe 95 PID 4040 wrote to memory of 1484 4040 8f04f8e4f87a7e19053f745b6fbcb795.exe 95 PID 4040 wrote to memory of 1484 4040 8f04f8e4f87a7e19053f745b6fbcb795.exe 95
Processes
-
C:\Users\Admin\AppData\Local\Temp\8f04f8e4f87a7e19053f745b6fbcb795.exe"C:\Users\Admin\AppData\Local\Temp\8f04f8e4f87a7e19053f745b6fbcb795.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4040 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:208
-
-
C:\Users\Admin\AppData\Local\Temp\8f04f8e4f87a7e19053f745b6fbcb795.exeC:\Users\Admin\AppData\Local\Temp\8f04f8e4f87a7e19053f745b6fbcb795.exe2⤵PID:1472
-
-
C:\Users\Admin\AppData\Local\Temp\8f04f8e4f87a7e19053f745b6fbcb795.exeC:\Users\Admin\AppData\Local\Temp\8f04f8e4f87a7e19053f745b6fbcb795.exe2⤵PID:1484
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\8f04f8e4f87a7e19053f745b6fbcb795.exe.log
Filesize1KB
MD52bea5ace75c1c406471930d05acf41f1
SHA1fb20b843c1bf0340d17793752b9bca1e2e0333ba
SHA25656036effd69e1a8cf8f77bb8acfee51f312865979e734638a2ad8f089d078d73
SHA51286a8af16f5ff8436418bddb4ff59211c770353416ef262bad0a36b2b5afa1ab766c63fd93a5d02c323c0504e10bbff43d5ff6cadc01739f64e135a6a9b388b1c
-
Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82