Behavioral task
behavioral1
Sample
Challan.exe
Resource
win7-20231020-en
General
-
Target
97a4007da195e9a00bd0e105813f1564.bin
-
Size
336KB
-
MD5
2753e9a67a6202af1ee47df987669720
-
SHA1
c72c38b0a1507ed5ca9e75a3a97a1af0351709ce
-
SHA256
6df298c7b4e3a90153830ba400cf5dbcdf746a9eb5d1fba8a7071356799e2886
-
SHA512
25c7622609b09747de3077813f72a47e864ae755895dc1eb26116b877f58b0273083220b3c736218769ad0dd969024046be3d0b36b7f2b25634840384494b8e3
-
SSDEEP
6144:ipw8qVezVipWx/HOJVWluX/CLnOkuxR9CI6VGqDMJl9YQNuDKh/IQ0:ip/zdx/uJQleCrzuge9YQIDQi
Malware Config
Extracted
kutaki
http://linkwotowoto.club/new/two.php
Signatures
-
Kutaki Executable 1 IoCs
Processes:
resource yara_rule static1/unpack002/Challan.exe family_kutaki -
Kutaki family
-
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
Processes:
resource unpack002/Challan.exe
Files
-
97a4007da195e9a00bd0e105813f1564.bin.zip
Password: infected
-
fd521a6a9e13b00329723103b9039e23950450f901da8f61cea3b92ff96dceee.zip.zip
Password: infected
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Challan.exe.exe windows:4 windows x86
Password: infected
3910e25da1d2ff6583dec41939e4bd20
Headers
File Characteristics
IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_32BIT_MACHINE
Imports
msvbvm60
__vbaVarTstGt
__vbaVarSub
ord690
__vbaStrI2
_CIcos
_adj_fptan
__vbaHresultCheck
__vbaVarMove
__vbaStrI4
__vbaVarVargNofree
__vbaAryMove
__vbaFreeVar
__vbaLenBstr
__vbaLateIdCall
__vbaStrVarMove
ord696
__vbaPut3
__vbaEnd
__vbaFreeVarList
_adj_fdiv_m64
ord698
__vbaPut4
__vbaNextEachVar
__vbaFreeObjList
ord516
__vbaVarIndexLoadRef
__vbaStrErrVarCopy
_adj_fprem1
ord518
ord626
ord519
__vbaForEachCollAd
__vbaVarCmpNe
__vbaStrCat
__vbaLsetFixstr
__vbaSetSystemError
__vbaRecDestruct
__vbaLenBstrB
__vbaHresultCheckObj
__vbaLenVar
_adj_fdiv_m32
ord666
__vbaAryVar
ord667
__vbaAryDestruct
ord591
__vbaVarIndexLoadRefLock
ord593
__vbaVarForInit
__vbaExitProc
ord594
__vbaI4Abs
ord595
__vbaOnError
__vbaObjSet
ord596
_adj_fdiv_m16i
__vbaObjSetAddref
_adj_fdivr_m16i
__vbaVarIndexLoad
ord598
__vbaForEachCollVar
ord520
__vbaStrFixstr
__vbaBoolVarNull
__vbaRefVarAry
__vbaFpR8
_CIsin
ord631
__vbaErase
__vbaVarCmpGt
__vbaVargVarMove
ord525
ord632
__vbaChkstk
ord526
__vbaFileClose
EVENT_SINK_AddRef
ord528
__vbaGenerateBoundsError
__vbaGet3
ord529
__vbaStrCmp
__vbaAryConstruct2
__vbaVarTstEq
__vbaGet4
__vbaPutOwner4
__vbaNextEachCollVar
ord561
__vbaObjVar
__vbaI2I4
DllFunctionCall
ord563
__vbaVarOr
ord670
ord564
__vbaLbound
_adj_fpatan
ord568
__vbaLateIdCallLd
__vbaR8Cy
__vbaStrR8
__vbaRedim
EVENT_SINK_Release
__vbaNew
ord600
ord601
__vbaUI1I2
_CIsqrt
__vbaObjIs
__vbaVarAnd
EVENT_SINK_QueryInterface
__vbaStr2Vec
__vbaUI1I4
__vbaStrUI1
__vbaExceptHandler
ord711
__vbaPrintFile
ord712
__vbaStrToUnicode
ord713
_adj_fprem
_adj_fdivr_m64
ord714
ord607
ord608
__vbaFPException
__vbaInStrVar
ord717
__vbaUbound
__vbaStrVarVal
ord534
__vbaGetOwner4
__vbaVarCat
__vbaI2Var
__vbaLsetFixstrFree
ord644
ord537
ord645
_CIlog
__vbaErrorOverflow
__vbaFileOpen
ord570
ord648
__vbaR8Str
__vbaVarLateMemCallLdRf
__vbaVar2Vec
__vbaInStr
__vbaNew2
_adj_fdiv_m32i
_adj_fdivr_m32i
__vbaVarSetObj
ord573
__vbaStrCopy
ord681
__vbaI4Str
__vbaVarCmpLt
__vbaFreeStrList
ord576
_adj_fdivr_m32
__vbaPowerR8
_adj_fdiv_r
ord685
ord100
__vbaVarTstNe
__vbaI4Var
ord689
__vbaFpCy
__vbaVarAdd
__vbaAryLock
__vbaStrToAnsi
__vbaStrComp
__vbaVarDup
__vbaFpI2
__vbaVarLateMemCallLd
ord616
__vbaFpI4
__vbaLateMemCallLd
ord617
_CIatan
__vbaCastObj
__vbaAryCopy
ord618
__vbaStrMove
__vbaForEachVar
__vbaR8IntI4
__vbaStrVarCopy
ord619
_allmul
__vbaLateIdSt
_CItan
__vbaNextEachCollAd
__vbaUI1Var
__vbaAryUnlock
__vbaVarForNext
_CIexp
__vbaFreeStr
__vbaFreeObj
ord581
Sections
.text Size: 228KB - Virtual size: 227KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.data Size: 4KB - Virtual size: 17KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 264KB - Virtual size: 261KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ