nymaim | a87a0292a9161c6820b5128a42d22ee1c325aa4246a4fe174d05c3386470fe6c

General

Target

file.exe
Size

2.7MB
MD5

4e38a947ee233ca87a6bb4ba3e37d0b0
SHA1

a4ad3dfc9effe5e0da4af8b62dfba94a452e3182
SHA256

a87a0292a9161c6820b5128a42d22ee1c325aa4246a4fe174d05c3386470fe6c
SHA512

b3a8397ef8a9d0de8c9b63fbb3f280c49a116f4a12c0b7b857deea7139e28ef9c45ac8999dc8708e1097a2997c7a3ee69369ecfb5d49325d6343c70f0643aa61
SSDEEP

49152:Z2+nbNNGrxwCbOXiAxAWjI7A8aUT/sb3PUVwkY7f1ZcWHHYaA5hq:MGmlbWiAljIMXIsTUu/BZcWYhDq

Score

10^/10

nymaim discovery trojan

Malware Config

Extracted

Family

nymaim

C2

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
4420	is-LKELS.tmp
4600	frsearcher70.exe
3256	heaGlRGR.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	frsearcher70.exe

Loads dropped DLL 1 IoCs

pid	Process
4420	is-LKELS.tmp

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)\frSearcher\unins000.dat	is-LKELS.tmp
File created	C:\Program Files (x86)\frSearcher\is-DLM44.tmp	is-LKELS.tmp
File created	C:\Program Files (x86)\frSearcher\is-18NLI.tmp	is-LKELS.tmp
File created	C:\Program Files (x86)\frSearcher\is-J7DDF.tmp	is-LKELS.tmp
File created	C:\Program Files (x86)\frSearcher\is-K0H7H.tmp	is-LKELS.tmp
File created	C:\Program Files (x86)\frSearcher\is-FU9UR.tmp	is-LKELS.tmp
File created	C:\Program Files (x86)\frSearcher\is-9D8EQ.tmp	is-LKELS.tmp
File created	C:\Program Files (x86)\frSearcher\is-M9IK9.tmp	is-LKELS.tmp
File created	C:\Program Files (x86)\frSearcher\is-FNF2K.tmp	is-LKELS.tmp
File created	C:\Program Files (x86)\frSearcher\is-857IC.tmp	is-LKELS.tmp
File opened for modification	C:\Program Files (x86)\frSearcher\unins000.dat	is-LKELS.tmp
File opened for modification	C:\Program Files (x86)\frSearcher\frsearcher70.exe	is-LKELS.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
4148	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4600	frsearcher70.exe
4600	frsearcher70.exe
4600	frsearcher70.exe
4600	frsearcher70.exe
4600	frsearcher70.exe
4600	frsearcher70.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4148	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4432 wrote to memory of 4420	4432	file.exe	76
PID 4432 wrote to memory of 4420	4432	file.exe	76
PID 4432 wrote to memory of 4420	4432	file.exe	76
PID 4420 wrote to memory of 4600	4420	is-LKELS.tmp	77
PID 4420 wrote to memory of 4600	4420	is-LKELS.tmp	77
PID 4420 wrote to memory of 4600	4420	is-LKELS.tmp	77
PID 4600 wrote to memory of 3256	4600	frsearcher70.exe	79
PID 4600 wrote to memory of 3256	4600	frsearcher70.exe	79
PID 4600 wrote to memory of 3256	4600	frsearcher70.exe	79
PID 4600 wrote to memory of 4448	4600	frsearcher70.exe	88
PID 4600 wrote to memory of 4448	4600	frsearcher70.exe	88
PID 4600 wrote to memory of 4448	4600	frsearcher70.exe	88
PID 4448 wrote to memory of 4148	4448	cmd.exe	90
PID 4448 wrote to memory of 4148	4448	cmd.exe	90
PID 4448 wrote to memory of 4148	4448	cmd.exe	90

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4432
- C:\Users\Admin\AppData\Local\Temp\is-MKPPK.tmp\is-LKELS.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-MKPPK.tmp\is-LKELS.tmp" /SL4 $7005E "C:\Users\Admin\AppData\Local\Temp\file.exe" 2585339 52736
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:4420
- - C:\Program Files (x86)\frSearcher\frsearcher70.exe
    "C:\Program Files (x86)\frSearcher\frsearcher70.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:4600
  - - C:\Users\Admin\AppData\Roaming\{1ca2f389-1ab8-11ed-aebb-806e6f6e6963}\heaGlRGR.exe
      4⤵
      Executes dropped EXE
      PID:3256
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "frsearcher70.exe" /f & erase "C:\Program Files (x86)\frSearcher\frsearcher70.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4448
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "frsearcher70.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:4148

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\frSearcher\frsearcher70.exe

Filesize
4.1MB

MD5
8bea40f5e9d9d8ae6cb571e324fd13bc

SHA1
35cc45ff70a3a2bafa00fa2ff9e9660a716337b8

SHA256
842041b611818fd8bba9ac581307fd6e8b52f93c8315daa60ed80132048c7bbd

SHA512
04ad8d5d30ace8d470dc4d73dc24b7f0e2d37ab3f97a0fd2a60d9a11b2fc477155221e7f91ce55c4a30c89a1647a48463c20c455f538dfdde5b53f78f5b0ac31

Download Submit
C:\Program Files (x86)\frSearcher\frsearcher70.exe

Filesize
4.1MB

MD5
8bea40f5e9d9d8ae6cb571e324fd13bc

SHA1
35cc45ff70a3a2bafa00fa2ff9e9660a716337b8

SHA256
842041b611818fd8bba9ac581307fd6e8b52f93c8315daa60ed80132048c7bbd

SHA512
04ad8d5d30ace8d470dc4d73dc24b7f0e2d37ab3f97a0fd2a60d9a11b2fc477155221e7f91ce55c4a30c89a1647a48463c20c455f538dfdde5b53f78f5b0ac31

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-FCFO1.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-MKPPK.tmp\is-LKELS.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-MKPPK.tmp\is-LKELS.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

Download Submit
C:\Users\Admin\AppData\Roaming\{1ca2f389-1ab8-11ed-aebb-806e6f6e6963}\heaGlRGR.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{1ca2f389-1ab8-11ed-aebb-806e6f6e6963}\heaGlRGR.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/4432-156-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4432-132-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4432-137-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4600-143-0x0000000000400000-0x0000000001617000-memory.dmp

Filesize
18.1MB

Download
memory/4600-148-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/4600-152-0x0000000000400000-0x0000000001617000-memory.dmp

Filesize
18.1MB

Download
memory/4600-144-0x0000000000400000-0x0000000001617000-memory.dmp

Filesize
18.1MB

Download
memory/4600-142-0x0000000000400000-0x0000000001617000-memory.dmp

Filesize
18.1MB

Download
memory/4600-155-0x0000000000400000-0x0000000001617000-memory.dmp

Filesize
18.1MB

Download

Analysis

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