Krampus[.]zip | Triage

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General

Target

Krampus.zip
Size

15.4MB
MD5

f2c4af070b935a1522b92d790ddee93c
SHA1

f9bf33356a0f91b091d9f61e688af44b800f57a6
SHA256

4a643c8ac145763b7e4a9b410a5dcc3562faf0f2204ec0d2613833923628f419
SHA512

369f8c27db42569f6185499f792d7d01013cc1e48652f568dfde6cfdc3c6d4d40f390a1b62dda5adbaace33e3f9509a062bc0e08863f4704084fe7d33ea7778f
SSDEEP

393216:Nkkk95qd0eLlm6DpdmjiPGn6asoNaAad25Aybi3R4Lh8lH:Nw9bmlmomv99aAg/yERoI

Score

7^/10

upx

Malware Config

Signatures

UPX packed file 1 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
static1/unpack001/Krampus/Krampus/DefenderControl/dControl.exe	upx

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
static1/unpack002/out.upx	autoit_exe

Unsigned PE 2 IoCs

Checks for missing Authenticode signature.

resource
unpack001/Krampus/Krampus/B1OdUv8CBH.exe
unpack002/out.upx

Files

Krampus.zip
.zip
Krampus/Krampus/B1OdUv8CBH.exe
.exe windows:4 windows x86 arch:x86

f34d5f2d4577ed6d9ceec516c1f5a744

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_NO_SEH
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE

Imports

mscoree

_CorExeMain

Sections

.text
Size: 18.8MB - Virtual size: 18.8MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rsrc
Size: 1KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 512B - Virtual size: 12B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
Krampus/Krampus/DefenderControl/Defender_Settings.vbs
.vbs
Krampus/Krampus/DefenderControl/ReadMe.txt
Krampus/Krampus/DefenderControl/dControl.exe
.exe windows:5 windows x86 arch:x86

Code Sign

69:98:6c:80:0a:7c:5b:8e:47:86:45:a0:3e:86:d5:40
Certificate

Issuer

CN=Sordum Software

Not Before

11-09-2021 21:00

Not After

31-07-2030 21:00

Subject

CN=Sordum Software

Extended Key Usages

ExtKeyUsageCodeSigning

1b:b5:8f:25:2a:df:23:00:49:28:c9:ae:3d:7e:ed:27
Certificate

Issuer

CN=Certum Trusted Network CA,OU=Certum Certification Authority,O=Unizeto Technologies S.A.,C=PL

Not Before

31-05-2021 06:43

Not After

17-09-2029 06:43

Subject

CN=Certum Trusted Network CA 2,OU=Certum Certification Authority,O=Unizeto Technologies S.A.,C=PL

Key Usages

KeyUsageCertSign
KeyUsageCRLSign

f1:64:25:8c:09:b6:e2:7b:e2:0e:32:60:8e:4b:f4:a8
Certificate

Issuer

CN=Certum Timestamping 2021 CA,O=Asseco Data Systems S.A.,C=PL

Not Before

19-05-2021 05:42

Not After

18-05-2032 05:42

Subject

CN=Certum Timestamp 2021,O=Asseco Data Systems S.A.,C=PL

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature

e7:ff:69:c7:3b:35:ce:4b:91:26:d8:74:7c:68:a5:87
Certificate

Issuer

CN=Certum Trusted Network CA 2,OU=Certum Certification Authority,O=Unizeto Technologies S.A.,C=PL

Not Before

19-05-2021 05:32

Not After

18-05-2036 05:32

Subject

CN=Certum Timestamping 2021 CA,O=Asseco Data Systems S.A.,C=PL

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageCertSign
KeyUsageCRLSign

13:f6:ef:3f:06:29:49:56:6c:21:59:e0:0c:ac:6f:83:24:95:fa:e4
Signer

Actual PE Digest

13:f6:ef:3f:06:29:49:56:6c:21:59:e0:0c:ac:6f:83:24:95:fa:e4

Digest Algorithm

sha1

PE Digest Matches

false

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_32BIT_MACHINE

Sections

UPX0
Size: - Virtual size: 492KB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

UPX1
Size: 262KB - Virtual size: 264KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 57KB - Virtual size: 60KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
out.upx
.exe windows:5 windows x86 arch:x86

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_32BIT_MACHINE

Sections

.text
Size: 514KB - Virtual size: 513KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 56KB - Virtual size: 55KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 26KB - Virtual size: 105KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 56KB - Virtual size: 56KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
Krampus/Krampus/DefenderControl/dControl.ini
Krampus/Krampus/UserManual.txt
Krampus/Krampus/fuckkrampus.png
.png
Krampus/Krampus/readme.txt

Sharing

General

Malware Config

Signatures

Files

f34d5f2d4577ed6d9ceec516c1f5a744

Headers

DLL Characteristics

File Characteristics

Imports

mscoree

Sections

.text Size: 18.8MB - Virtual size: 18.8MB

.rsrc Size: 1KB - Virtual size: 1KB

.reloc Size: 512B - Virtual size: 12B

Code Sign

69:98:6c:80:0a:7c:5b:8e:47:86:45:a0:3e:86:d5:40Certificate

Extended Key Usages

1b:b5:8f:25:2a:df:23:00:49:28:c9:ae:3d:7e:ed:27Certificate

Key Usages

f1:64:25:8c:09:b6:e2:7b:e2:0e:32:60:8e:4b:f4:a8Certificate

Extended Key Usages

Key Usages

e7:ff:69:c7:3b:35:ce:4b:91:26:d8:74:7c:68:a5:87Certificate

Extended Key Usages

Key Usages

13:f6:ef:3f:06:29:49:56:6c:21:59:e0:0c:ac:6f:83:24:95:fa:e4Signer

Headers

DLL Characteristics

File Characteristics

Sections

UPX0 Size: - Virtual size: 492KB

UPX1 Size: 262KB - Virtual size: 264KB

.rsrc Size: 57KB - Virtual size: 60KB

Headers

DLL Characteristics

File Characteristics

Sections

.text Size: 514KB - Virtual size: 513KB

.rdata Size: 56KB - Virtual size: 55KB

.data Size: 26KB - Virtual size: 105KB

.rsrc Size: 56KB - Virtual size: 56KB

.text
Size: 18.8MB - Virtual size: 18.8MB

.rsrc
Size: 1KB - Virtual size: 1KB

.reloc
Size: 512B - Virtual size: 12B

69:98:6c:80:0a:7c:5b:8e:47:86:45:a0:3e:86:d5:40
Certificate

1b:b5:8f:25:2a:df:23:00:49:28:c9:ae:3d:7e:ed:27
Certificate

f1:64:25:8c:09:b6:e2:7b:e2:0e:32:60:8e:4b:f4:a8
Certificate

e7:ff:69:c7:3b:35:ce:4b:91:26:d8:74:7c:68:a5:87
Certificate

13:f6:ef:3f:06:29:49:56:6c:21:59:e0:0c:ac:6f:83:24:95:fa:e4
Signer

UPX0
Size: - Virtual size: 492KB

UPX1
Size: 262KB - Virtual size: 264KB

.rsrc
Size: 57KB - Virtual size: 60KB

.text
Size: 514KB - Virtual size: 513KB

.rdata
Size: 56KB - Virtual size: 55KB

.data
Size: 26KB - Virtual size: 105KB

.rsrc
Size: 56KB - Virtual size: 56KB