nymaim | 35ed4a443022da3d55348d7c9abf510bb01485d4664b623991babfe01c20c4e8

Analysis

max time kernel
61s
max time network
62s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
03-11-2022 02:18

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General

Target

file.exe
Size

2.4MB
MD5

09e250959dfa72ad53a5a3c0beab23a9
SHA1

7e79f8d078bfc7b023adce11156f926ca5536f98
SHA256

35ed4a443022da3d55348d7c9abf510bb01485d4664b623991babfe01c20c4e8
SHA512

044e3b20c37e29ba17f85ef208871bd07e2643c3331090ed902599619b4ffdbbf4b0ad28278373db2f97421f9a992a4661b66415f316569565f8623bd86eb448
SSDEEP

49152:Z2dvGcseOQkcZ6xIKRrdFduwpdI46R83msOewHYj9A5hq:MdAcfGDdDLpdI4PmQ5jODq

Score

10^/10

nymaim discovery trojan

Malware Config

Extracted

Family

nymaim

45.139.105.171

85.31.46.167

Signatures

NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
trojan nymaim

Executes dropped EXE 3 IoCs

pid	Process
1456	is-SC2NK.tmp
1980	flsearcher67.exe
612	oLrTU74xBJ.exe

Loads dropped DLL 6 IoCs

pid	Process
988	file.exe
1456	is-SC2NK.tmp
1456	is-SC2NK.tmp
1456	is-SC2NK.tmp
1456	is-SC2NK.tmp
1980	flsearcher67.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in Program Files directory 12 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\flSearcher\is-0FRNU.tmp	is-SC2NK.tmp
File created	C:\Program Files (x86)\flSearcher\is-OT98K.tmp	is-SC2NK.tmp
File created	C:\Program Files (x86)\flSearcher\is-D9B8B.tmp	is-SC2NK.tmp
File created	C:\Program Files (x86)\flSearcher\is-56L44.tmp	is-SC2NK.tmp
File created	C:\Program Files (x86)\flSearcher\is-D0OEK.tmp	is-SC2NK.tmp
File created	C:\Program Files (x86)\flSearcher\is-VOMS1.tmp	is-SC2NK.tmp
File created	C:\Program Files (x86)\flSearcher\is-AU6PV.tmp	is-SC2NK.tmp
File created	C:\Program Files (x86)\flSearcher\is-066NL.tmp	is-SC2NK.tmp
File created	C:\Program Files (x86)\flSearcher\is-83E1B.tmp	is-SC2NK.tmp
File opened for modification	C:\Program Files (x86)\flSearcher\unins000.dat	is-SC2NK.tmp
File opened for modification	C:\Program Files (x86)\flSearcher\flsearcher67.exe	is-SC2NK.tmp
File created	C:\Program Files (x86)\flSearcher\unins000.dat	is-SC2NK.tmp

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
1672	taskkill.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1980	flsearcher67.exe
1980	flsearcher67.exe
1980	flsearcher67.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1672	taskkill.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 988 wrote to memory of 1456	988	file.exe	27
PID 988 wrote to memory of 1456	988	file.exe	27
PID 988 wrote to memory of 1456	988	file.exe	27
PID 988 wrote to memory of 1456	988	file.exe	27
PID 988 wrote to memory of 1456	988	file.exe	27
PID 988 wrote to memory of 1456	988	file.exe	27
PID 988 wrote to memory of 1456	988	file.exe	27
PID 1456 wrote to memory of 1980	1456	is-SC2NK.tmp	28
PID 1456 wrote to memory of 1980	1456	is-SC2NK.tmp	28
PID 1456 wrote to memory of 1980	1456	is-SC2NK.tmp	28
PID 1456 wrote to memory of 1980	1456	is-SC2NK.tmp	28
PID 1980 wrote to memory of 612	1980	flsearcher67.exe	31
PID 1980 wrote to memory of 612	1980	flsearcher67.exe	31
PID 1980 wrote to memory of 612	1980	flsearcher67.exe	31
PID 1980 wrote to memory of 612	1980	flsearcher67.exe	31
PID 1980 wrote to memory of 1580	1980	flsearcher67.exe	32
PID 1980 wrote to memory of 1580	1980	flsearcher67.exe	32
PID 1980 wrote to memory of 1580	1980	flsearcher67.exe	32
PID 1980 wrote to memory of 1580	1980	flsearcher67.exe	32
PID 1580 wrote to memory of 1672	1580	cmd.exe	34
PID 1580 wrote to memory of 1672	1580	cmd.exe	34
PID 1580 wrote to memory of 1672	1580	cmd.exe	34
PID 1580 wrote to memory of 1672	1580	cmd.exe	34

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:988
- C:\Users\Admin\AppData\Local\Temp\is-IIFFG.tmp\is-SC2NK.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-IIFFG.tmp\is-SC2NK.tmp" /SL4 $60122 "C:\Users\Admin\AppData\Local\Temp\file.exe" 2311810 52736
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:1456
- - C:\Program Files (x86)\flSearcher\flsearcher67.exe
    "C:\Program Files (x86)\flSearcher\flsearcher67.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:1980
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\oLrTU74xBJ.exe
      4⤵
      Executes dropped EXE
      PID:612
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "flsearcher67.exe" /f & erase "C:\Program Files (x86)\flSearcher\flsearcher67.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1580
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "flsearcher67.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:1672

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\flSearcher\flsearcher67.exe

Filesize
3.6MB

MD5
293c13dee1a58416af6b8f789c354bcd

SHA1
96ab528512d8dec0f3314af414aaaf594ed592eb

SHA256
3b2a6d7b87a54e13b1b90739fa4bd9fbaf4ea85c2519e366dfb6ffa94cc70fd0

SHA512
45b1fc4a32c76137bd77304fc359d50a78efdafe6361a7160c69be9850eac2b20d9760d00de1d64f063da741fa1cfe12d57773eb95d7e9bab74df489de60204e

Download Submit
C:\Program Files (x86)\flSearcher\flsearcher67.exe

Filesize
3.6MB

MD5
293c13dee1a58416af6b8f789c354bcd

SHA1
96ab528512d8dec0f3314af414aaaf594ed592eb

SHA256
3b2a6d7b87a54e13b1b90739fa4bd9fbaf4ea85c2519e366dfb6ffa94cc70fd0

SHA512
45b1fc4a32c76137bd77304fc359d50a78efdafe6361a7160c69be9850eac2b20d9760d00de1d64f063da741fa1cfe12d57773eb95d7e9bab74df489de60204e

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-IIFFG.tmp\is-SC2NK.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-IIFFG.tmp\is-SC2NK.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

Download Submit
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\oLrTU74xBJ.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Program Files (x86)\flSearcher\flsearcher67.exe

Filesize
3.6MB

MD5
293c13dee1a58416af6b8f789c354bcd

SHA1
96ab528512d8dec0f3314af414aaaf594ed592eb

SHA256
3b2a6d7b87a54e13b1b90739fa4bd9fbaf4ea85c2519e366dfb6ffa94cc70fd0

SHA512
45b1fc4a32c76137bd77304fc359d50a78efdafe6361a7160c69be9850eac2b20d9760d00de1d64f063da741fa1cfe12d57773eb95d7e9bab74df489de60204e

Download Submit
\Users\Admin\AppData\Local\Temp\is-7GJSQ.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-7GJSQ.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-7GJSQ.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-IIFFG.tmp\is-SC2NK.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\oLrTU74xBJ.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/988-65-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/988-54-0x0000000075021000-0x0000000075023000-memory.dmp

Filesize
8KB

Download
memory/988-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/988-87-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1456-81-0x0000000003220000-0x00000000043C2000-memory.dmp

Filesize
17.6MB

Download
memory/1456-70-0x0000000003220000-0x00000000043C2000-memory.dmp

Filesize
17.6MB

Download
memory/1980-73-0x0000000000400000-0x00000000015A2000-memory.dmp

Filesize
17.6MB

Download
memory/1980-72-0x0000000000400000-0x00000000015A2000-memory.dmp

Filesize
17.6MB

Download
memory/1980-71-0x0000000000400000-0x00000000015A2000-memory.dmp

Filesize
17.6MB

Download
memory/1980-77-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/1980-82-0x0000000000400000-0x00000000015A2000-memory.dmp

Filesize
17.6MB

Download
memory/1980-83-0x0000000000400000-0x00000000015A2000-memory.dmp

Filesize
17.6MB

Download
memory/1980-86-0x0000000000400000-0x00000000015A2000-memory.dmp

Filesize
17.6MB

Download