Overview
overview
5Static
static
8cstealer-main.zip
windows10-2004-x64
1cstealer-m...g1.png
windows10-2004-x64
3cstealer-m...go.ico
windows10-2004-x64
3cstealer-m...s1.png
windows10-2004-x64
3cstealer-m...s2.png
windows10-2004-x64
3cstealer-m...s3.png
windows10-2004-x64
3cstealer-m...s4.png
windows10-2004-x64
3cstealer-m...s5.png
windows10-2004-x64
3cstealer-m...px.exe
windows10-2004-x64
5out.exe
windows10-2004-x64
cstealer-main/LICENSE
windows10-2004-x64
1cstealer-m...DME.md
windows10-2004-x64
3cstealer-m...er.pyw
windows10-2004-x64
3cstealer-m...ler.py
windows10-2004-x64
3cstealer-m...ll.bat
windows10-2004-x64
1cstealer-m...ts.txt
windows10-2004-x64
1Behavioral task
behavioral1
Sample
cstealer-main.zip
Resource
win10v2004-20231215-en
Behavioral task
behavioral2
Sample
cstealer-main/CStealer_assets/img/img1.png
Resource
win10v2004-20231215-en
Behavioral task
behavioral3
Sample
cstealer-main/CStealer_assets/img/logo.ico
Resource
win10v2004-20231215-en
Behavioral task
behavioral4
Sample
cstealer-main/CStealer_assets/img/ss1.png
Resource
win10v2004-20231215-en
Behavioral task
behavioral5
Sample
cstealer-main/CStealer_assets/img/ss2.png
Resource
win10v2004-20231215-en
Behavioral task
behavioral6
Sample
cstealer-main/CStealer_assets/img/ss3.png
Resource
win10v2004-20231215-en
Behavioral task
behavioral7
Sample
cstealer-main/CStealer_assets/img/ss4.png
Resource
win10v2004-20231215-en
Behavioral task
behavioral8
Sample
cstealer-main/CStealer_assets/img/ss5.png
Resource
win10v2004-20231215-en
Behavioral task
behavioral9
Sample
cstealer-main/CStealer_assets/upx/upx.exe
Resource
win10v2004-20231215-en
Behavioral task
behavioral10
Sample
out.exe
Resource
win10v2004-20231222-en
Behavioral task
behavioral11
Sample
cstealer-main/LICENSE
Resource
win10v2004-20231222-en
Behavioral task
behavioral12
Sample
cstealer-main/README.md
Resource
win10v2004-20231222-en
Behavioral task
behavioral13
Sample
cstealer-main/builder.pyw
Resource
win10v2004-20231222-en
Behavioral task
behavioral14
Sample
cstealer-main/cstealer.py
Resource
win10v2004-20231215-en
Behavioral task
behavioral15
Sample
cstealer-main/install.bat
Resource
win10v2004-20231215-en
Behavioral task
behavioral16
Sample
cstealer-main/requirements.txt
Resource
win10v2004-20231215-en
General
-
Target
cstealer-main.zip
-
Size
1.6MB
-
MD5
be4c969a87e8b4a09fcf11163ece1edf
-
SHA1
28c12687c0aed7c529a731945b6fb44a50526b7a
-
SHA256
f24422844c22eca9d021f8c85f85ec2dcf43c1ef0a4df08d4a75bb9c5dc6b1ab
-
SHA512
0395e3844725baa6e555d356c9c30ac3273d57accc9a0af73b5c8e67a3e4d861225129fc1227c1108009b1bbff6bd6d3ac5f9f6b7ae5d41ca1014bf65db48c19
-
SSDEEP
24576:Jmn7bJ0O0qKVpguPHg3csOHB5cPRkRzWfYmeFnUqRrlIjfvTbkrqAItD6b6D8J7i:Jah02KMcJRRzWf6Uq3yMr8D8YN
Malware Config
Signatures
-
Patched UPX-packed file 1 IoCs
Sample is packed with UPX but required header fields are zeroed out to prevent unpacking with the default UPX tool.
resource yara_rule static1/unpack002/out.upx patched_upx -
resource yara_rule static1/unpack001/cstealer-main/CStealer_assets/upx/upx.exe upx -
Unsigned PE 2 IoCs
Checks for missing Authenticode signature.
resource unpack001/cstealer-main/CStealer_assets/upx/upx.exe unpack002/out.upx
Files
-
cstealer-main.zip.zip
-
cstealer-main/CStealer_assets/img/img1.png.png
-
cstealer-main/CStealer_assets/img/logo.ico
-
cstealer-main/CStealer_assets/img/ss1.png.png
-
cstealer-main/CStealer_assets/img/ss2.png.png
-
cstealer-main/CStealer_assets/img/ss3.png.png
-
cstealer-main/CStealer_assets/img/ss4.png.png
-
cstealer-main/CStealer_assets/img/ss5.png.png
-
cstealer-main/CStealer_assets/upx/upx.exe.exe windows:4 windows x64 arch:x64
Headers
File Characteristics
IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_DEBUG_STRIPPED
Sections
UPX0 Size: - Virtual size: 1.5MB
IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
UPX1 Size: 522KB - Virtual size: 524KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 2KB - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
-
out.upx.exe windows:4 windows x64 arch:x64
Headers
File Characteristics
IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_DEBUG_STRIPPED
Sections
.text Size: 850KB - Virtual size: 849KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.data Size: 3KB - Virtual size: 2KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rdata Size: 1.1MB - Virtual size: 1.1MB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.pdata Size: 34KB - Virtual size: 33KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.xdata Size: 35KB - Virtual size: 35KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.bss Size: - Virtual size: 12KB
IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.idata Size: 6KB - Virtual size: 5KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.CRT Size: 512B - Virtual size: 112B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.tls Size: 512B - Virtual size: 16B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 1KB - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
-
cstealer-main/LICENSE
-
cstealer-main/README.md
-
cstealer-main/builder.pyw
-
cstealer-main/cstealer.py
-
cstealer-main/install.bat
-
cstealer-main/requirements.txt