Solara[.]exe | Triage

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General

Target

Solara.exe
Size

512KB
MD5

3ef15046b94f9d359f066f84c740edde
SHA1

5895a89064d57b7272dc0075838c48b2449da637
SHA256

cec70d29baa94f9bccf2c4ebd4a0acd661413561129b1ae43ccc9b31ffef91aa
SHA512

e4f94e513b1b6fa34108b1e1bd83950f16943e1262663d02d56f178f02b7926e9b72ac3cb3442a4ad2fafd9d02103d74993f5913a72a0c90108c4b122d38f3ee
SSDEEP

12288:Pj/MhZMZ8xVm3Tywsu6jxfDV1OZzMqW97YZzGlt2EJNAJ:yuZ8fmOwsPfDV1Oc97G0AJ

Score

7^/10

Malware Config

Signatures

.NET Reactor proctector 1 IoCs

Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

resource	yara_rule
sample	net_reactor

Files

Solara.exe
.exe windows:4 windows x86 arch:x86

f34d5f2d4577ed6d9ceec516c1f5a744

Code Sign

33:00:00:03:de:8d:56:82:5a:f1:a4:a9:67:00:00:00:00:03:de
Certificate

Issuer

CN=Microsoft Code Signing PCA 2010,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

15/12/2020, 21:24

Not After

02/12/2021, 21:24

Subject

CN=Microsoft Corporation,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Extended Key Usages

ExtKeyUsageCodeSigning

61:0c:52:4c:00:00:00:00:00:03
Certificate

Issuer

CN=Microsoft Root Certificate Authority 2010,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

06/07/2010, 20:40

Not After

06/07/2025, 20:50

Subject

CN=Microsoft Code Signing PCA 2010,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

33:00:00:01:e2:f1:7d:92:02:0e:49:f8:7f:00:00:00:00:01:e2
Certificate

Issuer

CN=Microsoft Code Signing PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

15/12/2020, 21:31

Not After

02/12/2021, 21:31

Subject

CN=Microsoft Corporation,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Extended Key Usages

ExtKeyUsageCodeSigning

61:0e:90:d2:00:00:00:00:00:03
Certificate

Issuer

CN=Microsoft Root Certificate Authority 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

08/07/2011, 20:59

Not After

08/07/2026, 21:09

Subject

CN=Microsoft Code Signing PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

7f:70:f2:6c:d0:ef:9b:67:62:47:26:b3:1d:3c:fd:a8:0e:10:3c:50:3e:22:64:fd:4b:af:71:fd:a7:39:ba:43
Signer

Actual PE Digest

7f:70:f2:6c:d0:ef:9b:67:62:47:26:b3:1d:3c:fd:a8:0e:10:3c:50:3e:22:64:fd:4b:af:71:fd:a7:39:ba:43

Digest Algorithm

sha256

PE Digest Matches

false

7f:70:f2:6c:d0:ef:9b:67:62:47:26:b3:1d:3c:fd:a8:0e:10:3c:50:3e:22:64:fd:4b:af:71:fd:a7:39:ba:43
Signer

Actual PE Digest

7f:70:f2:6c:d0:ef:9b:67:62:47:26:b3:1d:3c:fd:a8:0e:10:3c:50:3e:22:64:fd:4b:af:71:fd:a7:39:ba:43

Digest Algorithm

sha256

PE Digest Matches

false

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
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_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_32BIT_MACHINE

Imports

mscoree

_CorExeMain

Sections

.text
Size: 158KB - Virtual size: 158KB

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

.rdata
Size: 333KB - Virtual size: 333KB

IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

Sharing

General

Malware Config

Signatures

Files

f34d5f2d4577ed6d9ceec516c1f5a744

Code Sign

33:00:00:03:de:8d:56:82:5a:f1:a4:a9:67:00:00:00:00:03:deCertificate

Extended Key Usages

61:0c:52:4c:00:00:00:00:00:03Certificate

Key Usages

33:00:00:01:e2:f1:7d:92:02:0e:49:f8:7f:00:00:00:00:01:e2Certificate

Extended Key Usages

61:0e:90:d2:00:00:00:00:00:03Certificate

Key Usages

7f:70:f2:6c:d0:ef:9b:67:62:47:26:b3:1d:3c:fd:a8:0e:10:3c:50:3e:22:64:fd:4b:af:71:fd:a7:39:ba:43Signer

7f:70:f2:6c:d0:ef:9b:67:62:47:26:b3:1d:3c:fd:a8:0e:10:3c:50:3e:22:64:fd:4b:af:71:fd:a7:39:ba:43Signer

Headers

DLL Characteristics

File Characteristics

Imports

mscoree

Sections

.text Size: 158KB - Virtual size: 158KB

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

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

.rdata Size: 333KB - Virtual size: 333KB

33:00:00:03:de:8d:56:82:5a:f1:a4:a9:67:00:00:00:00:03:de
Certificate

61:0c:52:4c:00:00:00:00:00:03
Certificate

33:00:00:01:e2:f1:7d:92:02:0e:49:f8:7f:00:00:00:00:01:e2
Certificate

61:0e:90:d2:00:00:00:00:00:03
Certificate

7f:70:f2:6c:d0:ef:9b:67:62:47:26:b3:1d:3c:fd:a8:0e:10:3c:50:3e:22:64:fd:4b:af:71:fd:a7:39:ba:43
Signer

7f:70:f2:6c:d0:ef:9b:67:62:47:26:b3:1d:3c:fd:a8:0e:10:3c:50:3e:22:64:fd:4b:af:71:fd:a7:39:ba:43
Signer

.text
Size: 158KB - Virtual size: 158KB

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

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

.rdata
Size: 333KB - Virtual size: 333KB