sunflower[.]exe

Sharing

Copy URL Twitter E-mail

General

Target

sunflower.exe
Size

4.6MB
MD5

ae3a48ff023573de300df2ff0928fc86
SHA1

2eabc5ea9029995bc4346c7e4b444164de1d8df4
SHA256

3be3541c48c368b9bc6f07eaf06ba3c0f5e6d1ea9e1d21e0628e2d0b694a07de
SHA512

000d5554af85478fcecb2ed05540b30ae09d2696d183bc915c4f9d9a335726c64cc528ca31c7b18b05300e79615207fbc864320f74b6ed0d5f428f347742125d
SSDEEP

98304:cTH3E47POkg36l5eXZpDEIJN3fSq9V51nSGGMCoEkyCV3QzoT/:A04jODqlYDE04qzrSGGVkNUO

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
sample	upx

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
unpack001/out.upx

Files

sunflower.exe
.exe windows x86

Code Sign

04:00:00:00:00:01:2f:4e:e1:52:d7
Certificate

Issuer

CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE

Not Before

13/04/2011, 10:00

Not After

28/01/2028, 12:00

Subject

CN=GlobalSign Timestamping CA - G2,O=GlobalSign nv-sa,C=BE

Key Usages

KeyUsageCertSign
KeyUsageCRLSign

11:21:d6:99:a7:64:97:3e:f1:f8:42:7e:e9:19:cc:53:41:14
Certificate

Issuer

CN=GlobalSign Timestamping CA - G2,O=GlobalSign nv-sa,C=BE

Not Before

24/05/2016, 00:00

Not After

24/06/2027, 00:00

Subject

CN=GlobalSign TSA for MS Authenticode - G2,O=GMO GlobalSign Pte Ltd,C=SG

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature

19:1a:32:cb:75:9c:97:b8:cf:ac:11:8d:d5:12:7f:49
Certificate

Issuer

CN=VeriSign Class 3 Public Primary Certification Authority - G5,OU=VeriSign Trust Network+OU=(c) 2006 VeriSign\, Inc. - For authorized use only,O=VeriSign\, Inc.,C=US

Not Before

04/03/2014, 00:00

Not After

03/03/2024, 23:59

Subject

CN=Symantec Class 3 Extended Validation Code Signing CA - G2,OU=Symantec Trust Network,O=Symantec Corporation,C=US

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageCertSign
KeyUsageCRLSign

07:fa:ed:03:7e:bc:ca:d2:ff:5a:8d:79:91:b8:35:4d
Certificate

Issuer

CN=Symantec Class 3 Extended Validation Code Signing CA - G2,OU=Symantec Trust Network,O=Symantec Corporation,C=US

Not Before

20/04/2018, 00:00

Not After

19/04/2020, 23:59

Subject

SERIALNUMBER=91310110787862412B,CN=SHANGHAI BEST ORAY INFORMATION TECHNOLOGY CO.\, LTD.,O=SHANGHAI BEST ORAY INFORMATION TECHNOLOGY CO.\, LTD.,L=上海,ST=上海,C=CN,2.5.4.15=#131450726976617465204f7267616e697a6174696f6e,1.3.6.1.4.1.311.60.2.1.1=#13085368616e67686169,1.3.6.1.4.1.311.60.2.1.2=#13085368616e67686169,1.3.6.1.4.1.311.60.2.1.3=#1302434e

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature

25:d6:ba:2b:7f:1c:2e:8a:9d:b4:3a:d5:54:69:4a:2e:be:1a:60:04
Signer

Actual PE Digest

25:d6:ba:2b:7f:1c:2e:8a:9d:b4:3a:d5:54:69:4a:2e:be:1a:60:04

Digest Algorithm

sha1

PE Digest Matches

true

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE

Sections

UPX0
Size: - Virtual size: 10.9MB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

UPX1
Size: 4.5MB - Virtual size: 4.5MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 131KB - Virtual size: 132KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
out.upx
.exe windows x86

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE

Exports

Exports

?ALawDecode@G711@@SAHE@Z
?ALawDecode@G711@@SAIPAFPBEI@Z
?ALawEncode@G711@@SAEF@Z
?ALawEncode@G711@@SAIPAEPAFI@Z
?ALawToULaw@G711@@SAEE@Z
?ALawToULaw@G711@@SAIPAEPBEI@Z
?Decode@G726@@QAEII@Z
?Decode@G726@@QAEIPAXPBXHI@Z
?Encode@G726@@QAEII@Z
?Encode@G726@@QAEIPAXHPBXI@Z
?Reset@G726@@QAEXXZ
?SetLaw@G726@@QAEXW4Law@@@Z
?SetRate@G726@@QAEXW4Rate@@@Z
?ULawDecode@G711@@SAHE@Z
?ULawDecode@G711@@SAIPAFPBEI@Z
?ULawEncode@G711@@SAEF@Z
?ULawEncode@G711@@SAIPAEPAFI@Z
?ULawToALaw@G711@@SAEE@Z
?ULawToALaw@G711@@SAIPAEPBEI@Z
celt_decode
celt_decode_float
celt_decoder_create
celt_decoder_ctl
celt_decoder_destroy
celt_encode
celt_encode_float
celt_encoder_create
celt_encoder_ctl
celt_encoder_destroy
celt_mode_create
celt_mode_destroy
celt_mode_info
celt_strerror

Sections

.text
Size: 7.0MB - Virtual size: 7.0MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 1.8MB - Virtual size: 1.8MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 135KB - Virtual size: 1.4MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.gfids
Size: 3KB - Virtual size: 2KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.tls
Size: 512B - Virtual size: 9B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

_RDATA
Size: 4KB - Virtual size: 3KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.rsrc
Size: 4.4MB - Virtual size: 4.4MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 426KB - Virtual size: 426KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

Code Sign

04:00:00:00:00:01:2f:4e:e1:52:d7Certificate

Key Usages

11:21:d6:99:a7:64:97:3e:f1:f8:42:7e:e9:19:cc:53:41:14Certificate

Extended Key Usages

Key Usages

19:1a:32:cb:75:9c:97:b8:cf:ac:11:8d:d5:12:7f:49Certificate

Extended Key Usages

Key Usages

07:fa:ed:03:7e:bc:ca:d2:ff:5a:8d:79:91:b8:35:4dCertificate

Extended Key Usages

Key Usages

25:d6:ba:2b:7f:1c:2e:8a:9d:b4:3a:d5:54:69:4a:2e:be:1a:60:04Signer

Headers

DLL Characteristics

File Characteristics

Sections

UPX0 Size: - Virtual size: 10.9MB

UPX1 Size: 4.5MB - Virtual size: 4.5MB

.rsrc Size: 131KB - Virtual size: 132KB

Headers

DLL Characteristics

File Characteristics

Exports

Exports

Sections

.text Size: 7.0MB - Virtual size: 7.0MB

.rdata Size: 1.8MB - Virtual size: 1.8MB

.data Size: 135KB - Virtual size: 1.4MB

.gfids Size: 3KB - Virtual size: 2KB

.tls Size: 512B - Virtual size: 9B

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

_RDATA Size: 4KB - Virtual size: 3KB

.rsrc Size: 4.4MB - Virtual size: 4.4MB

.reloc Size: 426KB - Virtual size: 426KB

04:00:00:00:00:01:2f:4e:e1:52:d7
Certificate

11:21:d6:99:a7:64:97:3e:f1:f8:42:7e:e9:19:cc:53:41:14
Certificate

19:1a:32:cb:75:9c:97:b8:cf:ac:11:8d:d5:12:7f:49
Certificate

07:fa:ed:03:7e:bc:ca:d2:ff:5a:8d:79:91:b8:35:4d
Certificate

25:d6:ba:2b:7f:1c:2e:8a:9d:b4:3a:d5:54:69:4a:2e:be:1a:60:04
Signer

UPX0
Size: - Virtual size: 10.9MB

UPX1
Size: 4.5MB - Virtual size: 4.5MB

.rsrc
Size: 131KB - Virtual size: 132KB

.text
Size: 7.0MB - Virtual size: 7.0MB

.rdata
Size: 1.8MB - Virtual size: 1.8MB

.data
Size: 135KB - Virtual size: 1.4MB

.gfids
Size: 3KB - Virtual size: 2KB

.tls
Size: 512B - Virtual size: 9B

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

_RDATA
Size: 4KB - Virtual size: 3KB

.rsrc
Size: 4.4MB - Virtual size: 4.4MB

.reloc
Size: 426KB - Virtual size: 426KB