nymaim | 1e61952d15ff48cb75f4adc7bd941de3e28d55fcfe400711bd1663bd71fbf723

General

Target

file.exe
Size

2.9MB
MD5

d6cfa6052088e22954edacc2d188db11
SHA1

856e7d9e435d57f701d2cc92f131a0f7bab36ed7
SHA256

1e61952d15ff48cb75f4adc7bd941de3e28d55fcfe400711bd1663bd71fbf723
SHA512

34bf1963c75225148128e85b0badd51823e603beac2aec38a5f7162c3cfbcaebc83e9b94cd9132922bbb64194dbf66af0eaaad22c2da3bcacfede6db29935d7d
SSDEEP

49152:Z20Zf/9bX+aWsjlgr7B8w0HA86QbJUNPYQUaExiFw8xrCmezvrUuczbA5hq:MkHEOKrND0HAwmYaExL9vIzMDq

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
2508	is-GBTRG.tmp
3872	ftsearcher71.exe
5096	dn8MF46LjR5Dk.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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	ftsearcher71.exe

Loads dropped DLL 1 IoCs

pid	Process
2508	is-GBTRG.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)\ftSearcher\is-F9E2H.tmp	is-GBTRG.tmp
File created	C:\Program Files (x86)\ftSearcher\is-5G73A.tmp	is-GBTRG.tmp
File created	C:\Program Files (x86)\ftSearcher\is-72DOB.tmp	is-GBTRG.tmp
File created	C:\Program Files (x86)\ftSearcher\is-JNKIT.tmp	is-GBTRG.tmp
File created	C:\Program Files (x86)\ftSearcher\unins000.dat	is-GBTRG.tmp
File created	C:\Program Files (x86)\ftSearcher\is-1I2FJ.tmp	is-GBTRG.tmp
File created	C:\Program Files (x86)\ftSearcher\is-L0F6C.tmp	is-GBTRG.tmp
File created	C:\Program Files (x86)\ftSearcher\is-TDD2K.tmp	is-GBTRG.tmp
File created	C:\Program Files (x86)\ftSearcher\is-OHC7V.tmp	is-GBTRG.tmp
File created	C:\Program Files (x86)\ftSearcher\is-4VT5F.tmp	is-GBTRG.tmp
File opened for modification	C:\Program Files (x86)\ftSearcher\unins000.dat	is-GBTRG.tmp
File opened for modification	C:\Program Files (x86)\ftSearcher\ftsearcher71.exe	is-GBTRG.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
3024	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3872	ftsearcher71.exe
3872	ftsearcher71.exe
3872	ftsearcher71.exe
3872	ftsearcher71.exe
3872	ftsearcher71.exe
3872	ftsearcher71.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3024	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1592 wrote to memory of 2508	1592	file.exe	82
PID 1592 wrote to memory of 2508	1592	file.exe	82
PID 1592 wrote to memory of 2508	1592	file.exe	82
PID 2508 wrote to memory of 3872	2508	is-GBTRG.tmp	83
PID 2508 wrote to memory of 3872	2508	is-GBTRG.tmp	83
PID 2508 wrote to memory of 3872	2508	is-GBTRG.tmp	83
PID 3872 wrote to memory of 5096	3872	ftsearcher71.exe	86
PID 3872 wrote to memory of 5096	3872	ftsearcher71.exe	86
PID 3872 wrote to memory of 5096	3872	ftsearcher71.exe	86
PID 3872 wrote to memory of 3668	3872	ftsearcher71.exe	92
PID 3872 wrote to memory of 3668	3872	ftsearcher71.exe	92
PID 3872 wrote to memory of 3668	3872	ftsearcher71.exe	92
PID 3668 wrote to memory of 3024	3668	cmd.exe	94
PID 3668 wrote to memory of 3024	3668	cmd.exe	94
PID 3668 wrote to memory of 3024	3668	cmd.exe	94

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1592
- C:\Users\Admin\AppData\Local\Temp\is-1N6PL.tmp\is-GBTRG.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-1N6PL.tmp\is-GBTRG.tmp" /SL4 $901C2 "C:\Users\Admin\AppData\Local\Temp\file.exe" 2805356 52736
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:2508
- - C:\Program Files (x86)\ftSearcher\ftsearcher71.exe
    "C:\Program Files (x86)\ftSearcher\ftsearcher71.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:3872
  - - C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\dn8MF46LjR5Dk.exe
      4⤵
      Executes dropped EXE
      PID:5096
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "ftsearcher71.exe" /f & erase "C:\Program Files (x86)\ftSearcher\ftsearcher71.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:3668
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "ftsearcher71.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:3024

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)\ftSearcher\ftsearcher71.exe

Filesize
4.4MB

MD5
1b73024d3a0ceeb2f40d01499e31e2d7

SHA1
bd302ef9474a0fc9b2103b72e03a3e872fea710a

SHA256
2726791eb9574a29b19b66f595e31b5b84c72cae2e83742f5101f4288713996b

SHA512
a3b9fad75eda31549637f8dce8d50e190079cb882cfd5e3cc972dd21d3d5e14080dc9ef6256961660250a4845156e87e7ce4a4cb94d17bdbc77dc9608727258f

Download Submit
C:\Program Files (x86)\ftSearcher\ftsearcher71.exe

Filesize
4.4MB

MD5
1b73024d3a0ceeb2f40d01499e31e2d7

SHA1
bd302ef9474a0fc9b2103b72e03a3e872fea710a

SHA256
2726791eb9574a29b19b66f595e31b5b84c72cae2e83742f5101f4288713996b

SHA512
a3b9fad75eda31549637f8dce8d50e190079cb882cfd5e3cc972dd21d3d5e14080dc9ef6256961660250a4845156e87e7ce4a4cb94d17bdbc77dc9608727258f

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-1N6PL.tmp\is-GBTRG.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-1N6PL.tmp\is-GBTRG.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-4GK2F.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\dn8MF46LjR5Dk.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\dn8MF46LjR5Dk.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/1592-138-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1592-156-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1592-132-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3872-143-0x0000000000400000-0x000000000165F000-memory.dmp

Filesize
18.4MB

Download
memory/3872-148-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/3872-152-0x0000000000400000-0x000000000165F000-memory.dmp

Filesize
18.4MB

Download
memory/3872-144-0x0000000000400000-0x000000000165F000-memory.dmp

Filesize
18.4MB

Download
memory/3872-142-0x0000000000400000-0x000000000165F000-memory.dmp

Filesize
18.4MB

Download
memory/3872-155-0x0000000000400000-0x000000000165F000-memory.dmp

Filesize
18.4MB

Download

Analysis

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